AIM:To compare and evaluate the appropriate prog-nostic indicators of lymph node basic staging in gastric cancer patients who underwent radical resection.METHODS:A total of 1042 gastric cancer patients who underwent r...AIM:To compare and evaluate the appropriate prog-nostic indicators of lymph node basic staging in gastric cancer patients who underwent radical resection.METHODS:A total of 1042 gastric cancer patients who underwent radical resection and D2 lymphadenectomy were staged using the 6th and 7th edition International Union Against Cancer(UICC)N staging methods and the metastatic lymph node ratio(MLNR)staging.Ho-mogeneity,discriminatory ability,and gradient mono-tonicity of the various staging methods were compared using linear trendχ2,likelihood ratioχ2 statistics,and Akaike information criterion(AIC)calculations.The area under the curve(AUC)was calculated to compare the predictive ability of the aforementioned three stag-ing methods.RESULTS:Optimal cut-points of the MLNR were cal-culated as MLNR0(0),MLNR1(0.01-0.30),MLNR2(0.31-0.50),and MLNR3(0.51-1.00).In univariate,multivariate,and stratified analyses,MLNR staging was superior to the 6th and 7th edition UICC N stag-ing methods.MLNR staging had a higher AUC,higher linear trend and likelihood ratioχ2 scores and lower AIC values than the other two staging methods.CONCLUSION:MLNR staging predicts survival after gastric cancer more precisely than the 6th and 7th edi-tion UICC N classif ications and should be considered as an alternative to current pathological N staging.展开更多
AIM:To investigate the prognostic impact of the metastatic lymph node ratio(MLR)in advanced gastric cancer from the cardia and fundus.METHODS:Two hundred and thirty-six patients with gastric cancer from the cardia and...AIM:To investigate the prognostic impact of the metastatic lymph node ratio(MLR)in advanced gastric cancer from the cardia and fundus.METHODS:Two hundred and thirty-six patients with gastric cancer from the cardia and fundus who underwent D2 curative resection were analyzed ret-rospectively.The correlations between MLR and the total lymph nodes,positive nodes and the total lymph nodes were analyzed respectively.The influence of MLR on the survival time of patients was determined with univariate Kaplan-Meier survival analysis and mul-tivariate Cox proportional hazard model analysis.And the multiple linear regression was used to identify the relation between MLR and the 5-year survival rate of the patients.RESULTS:The MLR did not correlate with the total lymph nodes resected(r=-0.093,P=0.057).The 5-year overall survival rate of the whole cohort was 37.5%.Kaplan-Meier survival analysis identified that the following eight factors influenced the survival time of the patients postoperatively:gender(χ2=4.26,P=0.0389),tumor size(χ2=18.48,P<0.001),Borrmann type(χ2=7.41,P=0.0065),histological grade(χ2=5.07,P=0.0243),pT category(χ2=49.42,P<0.001),pN category(χ2=87.7,P<0.001),total number of re-trieved lymph nodes(χ2=8.22,P=0.0042)and MLR(χ2=34.3,P<0.001).Cox proportional hazard model showed that tumor size(χ2=7.985,P=0.018),pTcategory(χ2=30.82,P<0.001)and MLR(χ2=69.39,P<0.001)independently influenced the prognosis.A linear correlation between MLR and the 5-year survival was statistically significant based on the multiple lin-ear regression(β=-0.63,P<0.001).Hypothetically,the 5-year survival would surpass 50%when MLR was lower than 10%.CONCLUSION:The MLR is an independent prognostic factor for patients with advanced gastric cancer from the cardia and fundus.The decrease of MLR due to adequate number of total resected lymph nodes can improve the survival.展开更多
BACKGROUND Traditional lymph node stage(N stage)has limitations in advanced gastric remnant cancer(GRC)patients;therefore,establishing a new predictive stage is necessary.AIM To explore the predictive value of positiv...BACKGROUND Traditional lymph node stage(N stage)has limitations in advanced gastric remnant cancer(GRC)patients;therefore,establishing a new predictive stage is necessary.AIM To explore the predictive value of positive lymph node ratio(LNR)according to clinicopathological characteristics and prognosis of locally advanced GRC.METHODS Seventy-four patients who underwent radical gastrectomy and lymphadenectomy for locally advanced GRC were retrospectively reviewed.The relationship between LNR and clinicopathological characteristics was analyzed.The survival analysis was performed using Kaplan-Meier survival curves and Cox regression model.RESULTS Number of metastatic LNs,tumor diameter,depth of tumor invasion,Borrmann type,serum tumor biomarkers,and tumor-node-metastasis(TNM)stage were correlated with LNR stage and N stage.Univariate analysis revealed that the factors affecting survival included tumor diameter,anemia,serum tumor biomarkers,vascular or neural invasion,combined resection,LNR stage,N stage,and TNM stage(all P<0.05).The median survival time for those with LNR0,LNR1,LNR2 and LNR3 stage were 61,31,23 and 17 mo,respectively,and the differences were significant(P=0.000).Anemia,tumor biomarkers and LNR stage were independent prognostic factors for survival in multivariable analysis(all P<0.05).CONCLUSION The new LNR stage is uniquely based on number of metastatic LNs,with significant prognostic value for locally advanced GRC,and could better differentiate overall survival,compared with N stage.展开更多
BACKGROUND Lymph node ratio(LNR)was demonstrated to play a crucial role in the prognosis of many tumors.However,research concerning the prognostic value of LNR in postoperative gastric neuroendocrine neoplasm(NEN)pati...BACKGROUND Lymph node ratio(LNR)was demonstrated to play a crucial role in the prognosis of many tumors.However,research concerning the prognostic value of LNR in postoperative gastric neuroendocrine neoplasm(NEN)patients was limited.AIM To explore the prognostic value of LNR in postoperative gastric NEN patients and to combine LNR to develop prognostic models.METHODS A total of 286 patients from the Surveillance,Epidemiology,and End Results database were divided into the training set and validation set at a ratio of 8:2.92 patients from the First Affiliated Hospital of Soochow University in China were designated as a test set.Cox regression analysis was used to explore the relationship between LNR and disease-specific survival(DSS)of gastric NEN patients.Random survival forest(RSF)algorithm and Cox proportional hazards(CoxPH)analysis were applied to develop models to predict DSS respectively,and compared with the 8th edition American Joint Committee on Cancer(AJCC)tumornode-metastasis(TNM)staging.RESULTS Multivariate analyses indicated that LNR was an independent prognostic factor for postoperative gastric NEN patients and a higher LNR was accompanied by a higher risk of death.The RSF model exhibited the best performance in predicting DSS,with the C-index in the test set being 0.769[95%confidence interval(CI):0.691-0.846]outperforming the CoxPH model(0.744,95%CI:0.665-0.822)and the 8th edition AJCC TNM staging(0.723,95%CI:0.613-0.833).The calibration curves and decision curve analysis(DCA)demonstrated the RSF model had good calibration and clinical benefits.Furthermore,the RSF model could perform risk stratification and individual prognosis prediction effectively.CONCLUSION A higher LNR indicated a lower DSS in postoperative gastric NEN patients.The RSF model outperformed the CoxPH model and the 8th edition AJCC TNM staging in the test set,showing potential in clinical practice.展开更多
AIM:To investigate the prognostic impact of metastatic lymph node ratio(rN) on gastric cancer after curative distal gastrectomy.METHODS:A total of 634 gastric cancer patients who underwent curative resection(R0) of ly...AIM:To investigate the prognostic impact of metastatic lymph node ratio(rN) on gastric cancer after curative distal gastrectomy.METHODS:A total of 634 gastric cancer patients who underwent curative resection(R0) of lymph nodes at distal gastrectomy in 1995-2004.Correlations between positive nodes and retrieved nodes,between rN and retrieved nodes,and between rN and negative lymph node(LN) count were analyzed respectively.Prognostic factors were identif ied by univariate and multivariate analyses.Staging accuracy of the pN category(5th UICC/TNM system) and the rN category was compared according to the survival rates of patients.A linear regression model was used to identify the relation between rN and 5-year survival rate of the patients.RESULTS:The number of dissected LNs was related with metastatic LNs but not related with rN.Cox regression analysis showed that depth of invasion,pN and rN category were the independent predictors of survival(P 0.05).Linear regression model showed a signif icant linear correlation between rN and the 5-year survival rate of gastric cancer patients(β = 0.862,P < 0.001).Pearson's correlation test revealed that negative LN count was negatively correlated with rN(P < 0.001).CONCLUSION:rN category is a better prognostic tool than the 5th UICC pN category for gastric cancer patients after curative distal gastrectomy.Increased negative LN count can reduce rN and improve the survival rate of gastric cancer patients.展开更多
BACKGROUND: The prognostic factors related to lymph node involvement [lymph node status, the number of positive lymph nodes, lymph node ratio (LNR)] and the number of nodes evaluated in patients with pancreatic ade...BACKGROUND: The prognostic factors related to lymph node involvement [lymph node status, the number of positive lymph nodes, lymph node ratio (LNR)] and the number of nodes evaluated in patients with pancreatic adenocarcinoma after pancreatectomy are poorly defined. METHODS: A total of 167 patients who had undergone resection of pancreatic adenocarcinoma from February 2010 to August 2011 were included in this study. Histological examination was performed to evaluate the tumor differentiation and lymph node involvement. Univariate and multivariate analyses were made to determine the relationship between the variables related to nodal involvement and the number of nodes and survival. RESULTS: The median number of total nodes examined was 10 (range 0-44) for the entire cohort. The median number of total nodes examined in node-negative (pN0) patients was similar to that in node-positive (pN1) patients. Patients with pN1 diseases had significantly worse survival than those with pN0 ones (P=0.000). Patients with three or more positive nodes had a poorer prognosis compared with those with the negative nodes (P=0.000). The prognosis of the patients with negative nodes was similar to that of those with one to two positive nodes (P=0.114). The median survival of patients with an LNR ≥0.4 was shorter than that of patients with an LNR 〈0.4 in the pN1 cohort (P=0.014). No significance was found between the number of total nodes examined and the prognosis, regardless of the cutoff of 10 or 12 and in the entire cohort or the pN0 and pN1 groups. Based on the multivariate analysis of the entire cohort and the pN1 group, the nodal status, the number of positive nodes and the LNR were all associated with survival. CONCLUSIONS: In addition to the nodal status, the number of positive nodes and the LNR can serve as comprehensive factors for the evaluation of nodal involvement. This approach may be more effective for predicting the survival of patients with pancreatic adenocarcinoma after pancreatectomy.展开更多
Background:Lymph node ratio(LNR)and margin status have prognostic significance in pancreatic cancer.Herein we examined the pathologic and clinical outcomes in patients with borderline resectable pancreatic cancer(BRPC...Background:Lymph node ratio(LNR)and margin status have prognostic significance in pancreatic cancer.Herein we examined the pathologic and clinical outcomes in patients with borderline resectable pancreatic cancer(BRPC)following neoadjuvant therapy(NAT)and pancreaticoduodenectomy.Methods:Patients who underwent treatment between January 1,2012 and June 30,2017 were included.Sequential patients in the BRPC group were compared to a propensity score matched cohort of patients with radiographically resectable pancreatic cancer who underwent upfront surgical resection.The BRPC group was also compared to sequential patients with radiographically resectable pancreatic cancer who required vein resection(VR)during upfront surgery.Results:There were 50 patients in the BRPC group,50 patients in the matched control group,and 38 patients in the VR group.Negative margins(R0)were seen in 72%,64%,and 34%of the BRPC,control,and VR groups,respectively(P=0.521 for BRPC vs.control;P=0.002 for BRPC vs.VR),with 24%of the BRPC group requiring a vascular resection.Nodal stage was N0 in 64%,20%,and 18%of the BRPC,control,and VR groups,respectively(P<0.001 for BRPC vs.control or VR).When nodal status was stratified into four groups(N0,or LNR≤0.2,0.2–0.4,≥0.4),the BRPC group had a more favorable distribution(P<0.001).The median overall survival were 28.8,38.6,and 19.0 months for the BRPC,control,and VR groups,respectively(log-rank P=0.096).Conclusions:NAT in BRPC was associated with more R0 and N0 resections and lower LNR compared to patients undergoing upfront resection for resectable disease.展开更多
Background Lymph node ratio (LNR) has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell ca...Background Lymph node ratio (LNR) has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell carcinoma (HPSCC) after neoadjuvant therapy in our institution.展开更多
Background:Pancreatic signet ring cell carcinoma(SRCC)is an exceedingly rare histological subtype of pancreatic cancer.Previous studies have focused on the trends of incidence and independent predictors of pancreatic ...Background:Pancreatic signet ring cell carcinoma(SRCC)is an exceedingly rare histological subtype of pancreatic cancer.Previous studies have focused on the trends of incidence and independent predictors of pancreatic SRCC.Our objectives of the study were to analyze the prognostic value of the lymph node ratio(LNR)and to explore the minimal number of lymph nodes examined to accurately evaluate the N stage in resected pancreatic SRCC.Method:We analyzed 120 patients diagnosed from January 1,1990,to December 31,2016,constituted the study cohort from the Surveillance,Epidemiology,and End Results(SEER)registry.We calculated the overall survival(OS)of these patients by using a Kaplan–Meier analysis.The Kaplan–Meier analysis was used to analyze the influence of various factors on the prognosis of patients in the univariate analysis.The multivariate Cox analysis were applied to find independent prognostic factors of patients with pancreatic SRCC.Receiver-operating characteristic curve(ROC)analysis to investigate the discriminatory ability of the total number of lymph nodes examined(TNLE)relative to whether lymph node metastasis was present.Results:The median number of lymph nodes examined among 120 patients with resected pancreatic SRCC was 14(interquartile range:6.25–20.0).According to the univariate analysis of OS,age,grade,chemotherapy,LNR,and TNLE were significantly different(P<.05).We demonstrated the prognostic benefit of chemotherapy in resected pancreatic SRCC,whereas radiotherapy was not associated with improved survival.The multivariate survival analysis showed that LNR and grade were independent prognostic indicators after pancreatic SRCC resection for OS.TNLE≥8 showed the highest discriminatory power for evaluating lymph node metastasis(Area under curve(AUC):0.656,95%confidence interval:0.564–0.741,Youden index:0.2533,sensitivity:78.67%,specificity:46.67%,P=.003).Conclusion:Our study indicated that the LNR was a valuable independent prognostic factor for resected pancreatic SRCC.Regional lymphadenectomy of at least 8 lymph nodes was necessary to accurately stage patients.An adequate number of lymph nodes examined are necessary for clinicians to accurately predict the significance of the LNR in resected pancreatic SRCC.展开更多
Lymph node ratio(LNR)has emerged as a promising predictor for survival outcome after surgery in different tumor types(1,2).The concept of evaluating LNR as a prognostic factor also after pancreatic surgery has been de...Lymph node ratio(LNR)has emerged as a promising predictor for survival outcome after surgery in different tumor types(1,2).The concept of evaluating LNR as a prognostic factor also after pancreatic surgery has been described in several publications(3,4).Most of the previous reports on LNR in this setting are single-center studies with rather small cohorts and/or mixed histological tumor types,possibly limiting the generalizability of the results.Even if the role of LNR in pancreatic cancer has been acknowledged,it is still regarded as having mostly academical implications when comparing results from different studies and is probably rarely being used as a tool in clinical decision-making world-wide.展开更多
BACKGROUND Lymph node status is a critical prognostic factor in gastric cancer(GC),but stage migration may occur in pathological lymph nodes(pN)staging.To address this,alternative staging systems such as the positive ...BACKGROUND Lymph node status is a critical prognostic factor in gastric cancer(GC),but stage migration may occur in pathological lymph nodes(pN)staging.To address this,alternative staging systems such as the positive lymph node ratio(LNR)and log odds of positive lymph nodes(LODDS)were introduced.AIM To assess the prognostic accuracy and stratification efficacy of three nodal staging systems in GC.METHODS A systematic review identified 12 studies,from which hazard ratios(HRs)for overall survival(OS)were summarized.Sensitivity analyses,subgroup analyses,publication bias assessments,and quality evaluations were conducted.To enhance comparability,data from studies with identical cutoff values for pN,LNR,and LODDS were pooled.Homogeneous stratification was then applied to generate Kaplan-Meier(KM)survival curves,assessing the stratification efficacy of three staging systems.RESULTS The HRs and 95%confidence intervals for pN,LNR,and LODDS were 2.16(1.72-2.73),2.05(1.65-2.55),and 3.15(2.15-4.37),respectively,confirming all three as independent prognostic risk factors for OS.Comparative analysis of HRs demonstrated that LODDS had superior prognostic predictive power over LNR and pN.KM curves for pN(N0,N1,N2,N3a,N3b),LNR(0.1/0.2/0.5),and LODDS(-1.5/-1.0/-0.5/0)revealed significant differences(P<0.001)among all prognostic stratifications.Mean differences and standard deviations in 60-month relative survival were 27.93%±0.29%,41.70%±0.30%,and 26.60%±0.28%for pN,LNR,and LODDS,respectively.CONCLUSION All three staging systems are independent prognostic factors for OS.LODDS demonstrated the highest specificity,making it especially useful for predicting outcomes,while pN was the most effective in homogeneous stratification,offering better patient differentiation.These findings highlight the complementary roles of LODDS and pN in enhancing prognostic accuracy and stratification.展开更多
Lymphadenectomy of colorectal cancer is a decisive factor for the prognostic and therapeutic staging of the patient. For over 15 years, we have asked ourselves if the minimum number of 12 examined lymph nodes (LNs) wa...Lymphadenectomy of colorectal cancer is a decisive factor for the prognostic and therapeutic staging of the patient. For over 15 years, we have asked ourselves if the minimum number of 12 examined lymph nodes (LNs) was sufficient for the prevention of understaging. The debate is certainly still open if we consider that a limit of 12 LNs is still not the gold standard mainly because the research methodology of the first studies has been criticized. Moreover many authors report that to date both in the United States and Europe the number “12” target is uncommon, not adequate, or accessible only in highly specialised centres. It should however be noted that both the pressing nature of the debate and the dissemination of guidelines have been responsible for a trend that has allowed for a general increase in the number of LNs examined. There are different variables that can affect the retrieval of LNs. Some, like the surgeon, the surgery, and the pathology exam, are without question modifiable; however, other both patient and disease-related variables are non-modifiable and pose the question of whether the minimum number of examined LNs must be individually assigned. The lymph nodal ratio, the sentinel LNs and the study of the biological aspects of the tumor could find valid application in this field in the near future.展开更多
BACKGROUND Colorectal neuroendocrine neoplasms(NENs)are a rare malignancy that primarily arises from the diffuse distribution of neuroendocrine cells in the colon and rectum.Previous studies have pointed out that the ...BACKGROUND Colorectal neuroendocrine neoplasms(NENs)are a rare malignancy that primarily arises from the diffuse distribution of neuroendocrine cells in the colon and rectum.Previous studies have pointed out that the status of lymph node may be used to predict the prognosis.AIM To investigate the predictive values of lymph node ratio(LNR),positive lymph node(PLN),and log odds of PLNs(LODDS)staging systems on the prognosis of colorectal NENs treated surgically,and compare their predictive values.METHODS This cohort study included 895 patients with colorectal NENs treated surgically from the Surveillance,Epidemiology,and End Results database.The endpoint was mortality of patients with colorectal NENs treated surgically.X-tile software was utilized to identify most suitable thresholds for categorizing the LNR,PLN,and LODDS.Participants were selected in a random manner to form training and testing sets.The prognosis of surgically treating colorectal NENs was examined using multivariate cox analysis to assess the associations of LNR,PLN,and LODDS with the prognosis of colorectal NENs.C-index was used for assessing the predictive effectiveness.We conducted a subgroup analysis to explore the different lymph node staging systems’predictive values.RESULTS After adjusting all confounding factors,PLN,LNR and LODDS staging systems were linked with mortality in patients with colorectal NENs treated surgically(P<0.05).We found that LODDS staging had a higher prognostic value for patients with colorectal NENs treated surgically than PLN and LNR staging systems.Similar results were obtained in the different G staging subgroup analyses.Furthermore,the area under the receiver operating characteristic curve values for LODDS staging system remained consistently higher than those of PLN or LNR,even at the 1-,2-,3-,4-,5-and 6-year follow-up periods.CONCLUSION LNR,PLN,and LODDS were found to significantly predict the prognosis of patients with colorectal NENs treated surgically.展开更多
BACKGROUND The prognosis of patients with appendiceal neuroendocrine tumors(ANETs) is related to lymph node(LN) metastasis and other factors.However,it is unclear how the number of examined LNs(ELNs) impact on surviva...BACKGROUND The prognosis of patients with appendiceal neuroendocrine tumors(ANETs) is related to lymph node(LN) metastasis and other factors.However,it is unclear how the number of examined LNs(ELNs) impact on survival.AIM To determine the factors affecting the cancer-specific survival(CSS) of patients with ANET and to evaluate the impact of the number of ELNs on survival.METHODS A total of 4583 ANET patients were analyzed in the Surveillance,Epidemiology,and End Results database.Univariate survival analysis was used to identify factors related to survival and the optimal number of ELNs and lymph node ratio(LNR) were determined by the Kaplan–Meier method.The survival difference was determined by CSS.RESULTS Except for sex,the other factors,such as age,year,race,grade,histological type,stage,tumor size,ELNs,LNR,and surgery type,were associated with prognosis.The 3-,5-,and 10-year CSS rates of ANET patients were 91.2%,87.5,and 81.7%,respectively(median follow-up period of 31 mo and range of 0-499 mo).There was no survival difference between the two surgery types,namely,local resection and colectomy or greater,in both stratifications of tumor size ≥ 2 cm(P = 0.523)and < 2 cm(P = 0.068).In contrast to patients with a tumor size < 2 cm,those with a tumor size ≥ 2 cm were more likely to have LN metastasis(χ~2 = 378.16,P < 0.001).The optimal number of ELNs was more than 11,7,and 18 for all patients,nodenegative patients,and node-positive patients,respectively.CSS rates of patients with a larger number of ELNs were significantly improved(≤ 10 vs ≥ 11,χ~2 =20.303,P < 0.001;≤ 6 vs ≥ 7,χ~2 = 11.569,P < 0.001;≤ 17 vs ≥ 18,χ~2 = 21.990,P < 0.001;respectively).ANET patients with an LNR value ≤ 0.16 were more likely to have better survival than those with values of 0.17-0.48(χ~2 = 48.243,P < 0.001) and 0.49-1(χ~2 = 168.485,P < 0.001).CONCLUSION ANET ≥ 2 cm are more likely to develop LN metastasis.At least 11 ELNs are required to better evaluate the prognosis.For patients with positive LN metastasis,18 or more LNs need to be detected and lower LNR values(LNR ≤ 0.16) indicate a better survival prognosis.展开更多
BACKGROUND Mismatch repair deficient/microsatellite instability-high(MMR-D/MSI-H)colorectal cancers(CRCs)possess a distinctive genomic profile that results in a spectrum of phenotypic attributes setting them apart fro...BACKGROUND Mismatch repair deficient/microsatellite instability-high(MMR-D/MSI-H)colorectal cancers(CRCs)possess a distinctive genomic profile that results in a spectrum of phenotypic attributes setting them apart from their mismatch repair proficient(MMR-P)or microsatellite stable(MSS)counterparts.CRCs have several prognostic factors,including stage,tumor differentiation,location,lymphovascular and perineural invasion,tumor budding,tumor infiltrating lymphocytes,lymph node yield(LNY),and lymph node ratio(LNR).AIM To determine the unique phenotypic characteristics of MMR-D/MSI-H CRCs and leverage the conventional wisdom of LNY and LNR with the distinctive characteristics of MMR-D/MSI-H CRCs.METHODS This retrospective analysis involved 223 stage I-III CRC patients who underwent surgical resection without neoadjuvant treatment.Clinical and histological features were obtained from patient records and by re-examining the hematoxylin and eosin-stained slides.MMR/MSI status was evaluated for all patients using either MMR immunohistochemistry or MSI testing.RESULTS Of the 223 patients in our study,87(39.01%)were MMR-D/MSI-H CRCs while 136(60.99%)were MMR-P/MSS CRCs.The MMR-D/MSI-H CRCs exhibited significant statistical differences compared to the MMR-P/MSS CRCs in several factors,including location,stage,tumor budding,lymphovascular and perineural invasion,lymphocytic response,LNY,LNR,and size of uninvolved lymph nodes.LNY and LNR were significantly higher in MMR-D/MSI-H group compared with the MMR-P/MSS group(P=0.003 and P<0.001,respectively).Also,the interquartile range of the largest uninvolved lymph node was 1 cm(0.8 cm-1.2 cm)in MMR-D/MSI-H CRCs compared to 0.7 cm(0.6 cm-0.97 cm)in MMRP/MSS CRCs.The overall survival for the MMR-P/MSS CRC group was 71%at five years,and the MMR-D/MSIH CRC group was 92%at five years(P<0.001).CONCLUSION MMR-D/MSI-H CRCs possess a unique genomic profile that leads to distinct phenotypic characteristics,including an enhanced immune response.This distinctive profile underscores the substantial prognostic and predictive value of MMR-D/MSI-H status in CRC.展开更多
基金Supported by The Science and Technology Program of Guangdong Province (2009B030801112)the Natural Science Foundation of Guangdong Province,China,No.9151008901000119the Science and Technology Program of Huangpu District,Guangdong Province (031)
摘要AIM:To compare and evaluate the appropriate prog-nostic indicators of lymph node basic staging in gastric cancer patients who underwent radical resection.METHODS:A total of 1042 gastric cancer patients who underwent radical resection and D2 lymphadenectomy were staged using the 6th and 7th edition International Union Against Cancer(UICC)N staging methods and the metastatic lymph node ratio(MLNR)staging.Ho-mogeneity,discriminatory ability,and gradient mono-tonicity of the various staging methods were compared using linear trendχ2,likelihood ratioχ2 statistics,and Akaike information criterion(AIC)calculations.The area under the curve(AUC)was calculated to compare the predictive ability of the aforementioned three stag-ing methods.RESULTS:Optimal cut-points of the MLNR were cal-culated as MLNR0(0),MLNR1(0.01-0.30),MLNR2(0.31-0.50),and MLNR3(0.51-1.00).In univariate,multivariate,and stratified analyses,MLNR staging was superior to the 6th and 7th edition UICC N stag-ing methods.MLNR staging had a higher AUC,higher linear trend and likelihood ratioχ2 scores and lower AIC values than the other two staging methods.CONCLUSION:MLNR staging predicts survival after gastric cancer more precisely than the 6th and 7th edi-tion UICC N classif ications and should be considered as an alternative to current pathological N staging.
摘要AIM:To investigate the prognostic impact of the metastatic lymph node ratio(MLR)in advanced gastric cancer from the cardia and fundus.METHODS:Two hundred and thirty-six patients with gastric cancer from the cardia and fundus who underwent D2 curative resection were analyzed ret-rospectively.The correlations between MLR and the total lymph nodes,positive nodes and the total lymph nodes were analyzed respectively.The influence of MLR on the survival time of patients was determined with univariate Kaplan-Meier survival analysis and mul-tivariate Cox proportional hazard model analysis.And the multiple linear regression was used to identify the relation between MLR and the 5-year survival rate of the patients.RESULTS:The MLR did not correlate with the total lymph nodes resected(r=-0.093,P=0.057).The 5-year overall survival rate of the whole cohort was 37.5%.Kaplan-Meier survival analysis identified that the following eight factors influenced the survival time of the patients postoperatively:gender(χ2=4.26,P=0.0389),tumor size(χ2=18.48,P<0.001),Borrmann type(χ2=7.41,P=0.0065),histological grade(χ2=5.07,P=0.0243),pT category(χ2=49.42,P<0.001),pN category(χ2=87.7,P<0.001),total number of re-trieved lymph nodes(χ2=8.22,P=0.0042)and MLR(χ2=34.3,P<0.001).Cox proportional hazard model showed that tumor size(χ2=7.985,P=0.018),pTcategory(χ2=30.82,P<0.001)and MLR(χ2=69.39,P<0.001)independently influenced the prognosis.A linear correlation between MLR and the 5-year survival was statistically significant based on the multiple lin-ear regression(β=-0.63,P<0.001).Hypothetically,the 5-year survival would surpass 50%when MLR was lower than 10%.CONCLUSION:The MLR is an independent prognostic factor for patients with advanced gastric cancer from the cardia and fundus.The decrease of MLR due to adequate number of total resected lymph nodes can improve the survival.
基金Shanghai Municipal Committee of Science and Technology,No.21Y11913200。
摘要BACKGROUND Traditional lymph node stage(N stage)has limitations in advanced gastric remnant cancer(GRC)patients;therefore,establishing a new predictive stage is necessary.AIM To explore the predictive value of positive lymph node ratio(LNR)according to clinicopathological characteristics and prognosis of locally advanced GRC.METHODS Seventy-four patients who underwent radical gastrectomy and lymphadenectomy for locally advanced GRC were retrospectively reviewed.The relationship between LNR and clinicopathological characteristics was analyzed.The survival analysis was performed using Kaplan-Meier survival curves and Cox regression model.RESULTS Number of metastatic LNs,tumor diameter,depth of tumor invasion,Borrmann type,serum tumor biomarkers,and tumor-node-metastasis(TNM)stage were correlated with LNR stage and N stage.Univariate analysis revealed that the factors affecting survival included tumor diameter,anemia,serum tumor biomarkers,vascular or neural invasion,combined resection,LNR stage,N stage,and TNM stage(all P<0.05).The median survival time for those with LNR0,LNR1,LNR2 and LNR3 stage were 61,31,23 and 17 mo,respectively,and the differences were significant(P=0.000).Anemia,tumor biomarkers and LNR stage were independent prognostic factors for survival in multivariable analysis(all P<0.05).CONCLUSION The new LNR stage is uniquely based on number of metastatic LNs,with significant prognostic value for locally advanced GRC,and could better differentiate overall survival,compared with N stage.
基金Supported by the Science and Technology Plan of Suzhou City,No.SKY2021038.
摘要BACKGROUND Lymph node ratio(LNR)was demonstrated to play a crucial role in the prognosis of many tumors.However,research concerning the prognostic value of LNR in postoperative gastric neuroendocrine neoplasm(NEN)patients was limited.AIM To explore the prognostic value of LNR in postoperative gastric NEN patients and to combine LNR to develop prognostic models.METHODS A total of 286 patients from the Surveillance,Epidemiology,and End Results database were divided into the training set and validation set at a ratio of 8:2.92 patients from the First Affiliated Hospital of Soochow University in China were designated as a test set.Cox regression analysis was used to explore the relationship between LNR and disease-specific survival(DSS)of gastric NEN patients.Random survival forest(RSF)algorithm and Cox proportional hazards(CoxPH)analysis were applied to develop models to predict DSS respectively,and compared with the 8th edition American Joint Committee on Cancer(AJCC)tumornode-metastasis(TNM)staging.RESULTS Multivariate analyses indicated that LNR was an independent prognostic factor for postoperative gastric NEN patients and a higher LNR was accompanied by a higher risk of death.The RSF model exhibited the best performance in predicting DSS,with the C-index in the test set being 0.769[95%confidence interval(CI):0.691-0.846]outperforming the CoxPH model(0.744,95%CI:0.665-0.822)and the 8th edition AJCC TNM staging(0.723,95%CI:0.613-0.833).The calibration curves and decision curve analysis(DCA)demonstrated the RSF model had good calibration and clinical benefits.Furthermore,the RSF model could perform risk stratification and individual prognosis prediction effectively.CONCLUSION A higher LNR indicated a lower DSS in postoperative gastric NEN patients.The RSF model outperformed the CoxPH model and the 8th edition AJCC TNM staging in the test set,showing potential in clinical practice.
摘要AIM:To investigate the prognostic impact of metastatic lymph node ratio(rN) on gastric cancer after curative distal gastrectomy.METHODS:A total of 634 gastric cancer patients who underwent curative resection(R0) of lymph nodes at distal gastrectomy in 1995-2004.Correlations between positive nodes and retrieved nodes,between rN and retrieved nodes,and between rN and negative lymph node(LN) count were analyzed respectively.Prognostic factors were identif ied by univariate and multivariate analyses.Staging accuracy of the pN category(5th UICC/TNM system) and the rN category was compared according to the survival rates of patients.A linear regression model was used to identify the relation between rN and 5-year survival rate of the patients.RESULTS:The number of dissected LNs was related with metastatic LNs but not related with rN.Cox regression analysis showed that depth of invasion,pN and rN category were the independent predictors of survival(P 0.05).Linear regression model showed a signif icant linear correlation between rN and the 5-year survival rate of gastric cancer patients(β = 0.862,P < 0.001).Pearson's correlation test revealed that negative LN count was negatively correlated with rN(P < 0.001).CONCLUSION:rN category is a better prognostic tool than the 5th UICC pN category for gastric cancer patients after curative distal gastrectomy.Increased negative LN count can reduce rN and improve the survival rate of gastric cancer patients.
基金supported in part by grants from the Sino-German Center (GZ857)Science Foundation of Shanghai (13ZR1407500)+2 种基金Shanghai Rising Star Program (12QH1400600 and 14QA1400900)Fudan University Young Investigator Promoting Program (20520133403)the National Science Foundation of China (81101807, 81001058, 81372649, 81372653 and 81172276)
摘要BACKGROUND: The prognostic factors related to lymph node involvement [lymph node status, the number of positive lymph nodes, lymph node ratio (LNR)] and the number of nodes evaluated in patients with pancreatic adenocarcinoma after pancreatectomy are poorly defined. METHODS: A total of 167 patients who had undergone resection of pancreatic adenocarcinoma from February 2010 to August 2011 were included in this study. Histological examination was performed to evaluate the tumor differentiation and lymph node involvement. Univariate and multivariate analyses were made to determine the relationship between the variables related to nodal involvement and the number of nodes and survival. RESULTS: The median number of total nodes examined was 10 (range 0-44) for the entire cohort. The median number of total nodes examined in node-negative (pN0) patients was similar to that in node-positive (pN1) patients. Patients with pN1 diseases had significantly worse survival than those with pN0 ones (P=0.000). Patients with three or more positive nodes had a poorer prognosis compared with those with the negative nodes (P=0.000). The prognosis of the patients with negative nodes was similar to that of those with one to two positive nodes (P=0.114). The median survival of patients with an LNR ≥0.4 was shorter than that of patients with an LNR 〈0.4 in the pN1 cohort (P=0.014). No significance was found between the number of total nodes examined and the prognosis, regardless of the cutoff of 10 or 12 and in the entire cohort or the pN0 and pN1 groups. Based on the multivariate analysis of the entire cohort and the pN1 group, the nodal status, the number of positive nodes and the LNR were all associated with survival. CONCLUSIONS: In addition to the nodal status, the number of positive nodes and the LNR can serve as comprehensive factors for the evaluation of nodal involvement. This approach may be more effective for predicting the survival of patients with pancreatic adenocarcinoma after pancreatectomy.
摘要Background:Lymph node ratio(LNR)and margin status have prognostic significance in pancreatic cancer.Herein we examined the pathologic and clinical outcomes in patients with borderline resectable pancreatic cancer(BRPC)following neoadjuvant therapy(NAT)and pancreaticoduodenectomy.Methods:Patients who underwent treatment between January 1,2012 and June 30,2017 were included.Sequential patients in the BRPC group were compared to a propensity score matched cohort of patients with radiographically resectable pancreatic cancer who underwent upfront surgical resection.The BRPC group was also compared to sequential patients with radiographically resectable pancreatic cancer who required vein resection(VR)during upfront surgery.Results:There were 50 patients in the BRPC group,50 patients in the matched control group,and 38 patients in the VR group.Negative margins(R0)were seen in 72%,64%,and 34%of the BRPC,control,and VR groups,respectively(P=0.521 for BRPC vs.control;P=0.002 for BRPC vs.VR),with 24%of the BRPC group requiring a vascular resection.Nodal stage was N0 in 64%,20%,and 18%of the BRPC,control,and VR groups,respectively(P<0.001 for BRPC vs.control or VR).When nodal status was stratified into four groups(N0,or LNR≤0.2,0.2–0.4,≥0.4),the BRPC group had a more favorable distribution(P<0.001).The median overall survival were 28.8,38.6,and 19.0 months for the BRPC,control,and VR groups,respectively(log-rank P=0.096).Conclusions:NAT in BRPC was associated with more R0 and N0 resections and lower LNR compared to patients undergoing upfront resection for resectable disease.
摘要Background Lymph node ratio (LNR) has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell carcinoma (HPSCC) after neoadjuvant therapy in our institution.
摘要Background:Pancreatic signet ring cell carcinoma(SRCC)is an exceedingly rare histological subtype of pancreatic cancer.Previous studies have focused on the trends of incidence and independent predictors of pancreatic SRCC.Our objectives of the study were to analyze the prognostic value of the lymph node ratio(LNR)and to explore the minimal number of lymph nodes examined to accurately evaluate the N stage in resected pancreatic SRCC.Method:We analyzed 120 patients diagnosed from January 1,1990,to December 31,2016,constituted the study cohort from the Surveillance,Epidemiology,and End Results(SEER)registry.We calculated the overall survival(OS)of these patients by using a Kaplan–Meier analysis.The Kaplan–Meier analysis was used to analyze the influence of various factors on the prognosis of patients in the univariate analysis.The multivariate Cox analysis were applied to find independent prognostic factors of patients with pancreatic SRCC.Receiver-operating characteristic curve(ROC)analysis to investigate the discriminatory ability of the total number of lymph nodes examined(TNLE)relative to whether lymph node metastasis was present.Results:The median number of lymph nodes examined among 120 patients with resected pancreatic SRCC was 14(interquartile range:6.25–20.0).According to the univariate analysis of OS,age,grade,chemotherapy,LNR,and TNLE were significantly different(P<.05).We demonstrated the prognostic benefit of chemotherapy in resected pancreatic SRCC,whereas radiotherapy was not associated with improved survival.The multivariate survival analysis showed that LNR and grade were independent prognostic indicators after pancreatic SRCC resection for OS.TNLE≥8 showed the highest discriminatory power for evaluating lymph node metastasis(Area under curve(AUC):0.656,95%confidence interval:0.564–0.741,Youden index:0.2533,sensitivity:78.67%,specificity:46.67%,P=.003).Conclusion:Our study indicated that the LNR was a valuable independent prognostic factor for resected pancreatic SRCC.Regional lymphadenectomy of at least 8 lymph nodes was necessary to accurately stage patients.An adequate number of lymph nodes examined are necessary for clinicians to accurately predict the significance of the LNR in resected pancreatic SRCC.
摘要Lymph node ratio(LNR)has emerged as a promising predictor for survival outcome after surgery in different tumor types(1,2).The concept of evaluating LNR as a prognostic factor also after pancreatic surgery has been described in several publications(3,4).Most of the previous reports on LNR in this setting are single-center studies with rather small cohorts and/or mixed histological tumor types,possibly limiting the generalizability of the results.Even if the role of LNR in pancreatic cancer has been acknowledged,it is still regarded as having mostly academical implications when comparing results from different studies and is probably rarely being used as a tool in clinical decision-making world-wide.
基金the Clinical Medical Team Introduction Program of Suzhou,No.SZYJTD201804.
摘要BACKGROUND Lymph node status is a critical prognostic factor in gastric cancer(GC),but stage migration may occur in pathological lymph nodes(pN)staging.To address this,alternative staging systems such as the positive lymph node ratio(LNR)and log odds of positive lymph nodes(LODDS)were introduced.AIM To assess the prognostic accuracy and stratification efficacy of three nodal staging systems in GC.METHODS A systematic review identified 12 studies,from which hazard ratios(HRs)for overall survival(OS)were summarized.Sensitivity analyses,subgroup analyses,publication bias assessments,and quality evaluations were conducted.To enhance comparability,data from studies with identical cutoff values for pN,LNR,and LODDS were pooled.Homogeneous stratification was then applied to generate Kaplan-Meier(KM)survival curves,assessing the stratification efficacy of three staging systems.RESULTS The HRs and 95%confidence intervals for pN,LNR,and LODDS were 2.16(1.72-2.73),2.05(1.65-2.55),and 3.15(2.15-4.37),respectively,confirming all three as independent prognostic risk factors for OS.Comparative analysis of HRs demonstrated that LODDS had superior prognostic predictive power over LNR and pN.KM curves for pN(N0,N1,N2,N3a,N3b),LNR(0.1/0.2/0.5),and LODDS(-1.5/-1.0/-0.5/0)revealed significant differences(P<0.001)among all prognostic stratifications.Mean differences and standard deviations in 60-month relative survival were 27.93%±0.29%,41.70%±0.30%,and 26.60%±0.28%for pN,LNR,and LODDS,respectively.CONCLUSION All three staging systems are independent prognostic factors for OS.LODDS demonstrated the highest specificity,making it especially useful for predicting outcomes,while pN was the most effective in homogeneous stratification,offering better patient differentiation.These findings highlight the complementary roles of LODDS and pN in enhancing prognostic accuracy and stratification.
摘要Lymphadenectomy of colorectal cancer is a decisive factor for the prognostic and therapeutic staging of the patient. For over 15 years, we have asked ourselves if the minimum number of 12 examined lymph nodes (LNs) was sufficient for the prevention of understaging. The debate is certainly still open if we consider that a limit of 12 LNs is still not the gold standard mainly because the research methodology of the first studies has been criticized. Moreover many authors report that to date both in the United States and Europe the number “12” target is uncommon, not adequate, or accessible only in highly specialised centres. It should however be noted that both the pressing nature of the debate and the dissemination of guidelines have been responsible for a trend that has allowed for a general increase in the number of LNs examined. There are different variables that can affect the retrieval of LNs. Some, like the surgeon, the surgery, and the pathology exam, are without question modifiable; however, other both patient and disease-related variables are non-modifiable and pose the question of whether the minimum number of examined LNs must be individually assigned. The lymph nodal ratio, the sentinel LNs and the study of the biological aspects of the tumor could find valid application in this field in the near future.
基金Supported by the Zhaoqing Science and Technology Innovation Guidance Project,No.2022040314032.
摘要BACKGROUND Colorectal neuroendocrine neoplasms(NENs)are a rare malignancy that primarily arises from the diffuse distribution of neuroendocrine cells in the colon and rectum.Previous studies have pointed out that the status of lymph node may be used to predict the prognosis.AIM To investigate the predictive values of lymph node ratio(LNR),positive lymph node(PLN),and log odds of PLNs(LODDS)staging systems on the prognosis of colorectal NENs treated surgically,and compare their predictive values.METHODS This cohort study included 895 patients with colorectal NENs treated surgically from the Surveillance,Epidemiology,and End Results database.The endpoint was mortality of patients with colorectal NENs treated surgically.X-tile software was utilized to identify most suitable thresholds for categorizing the LNR,PLN,and LODDS.Participants were selected in a random manner to form training and testing sets.The prognosis of surgically treating colorectal NENs was examined using multivariate cox analysis to assess the associations of LNR,PLN,and LODDS with the prognosis of colorectal NENs.C-index was used for assessing the predictive effectiveness.We conducted a subgroup analysis to explore the different lymph node staging systems’predictive values.RESULTS After adjusting all confounding factors,PLN,LNR and LODDS staging systems were linked with mortality in patients with colorectal NENs treated surgically(P<0.05).We found that LODDS staging had a higher prognostic value for patients with colorectal NENs treated surgically than PLN and LNR staging systems.Similar results were obtained in the different G staging subgroup analyses.Furthermore,the area under the receiver operating characteristic curve values for LODDS staging system remained consistently higher than those of PLN or LNR,even at the 1-,2-,3-,4-,5-and 6-year follow-up periods.CONCLUSION LNR,PLN,and LODDS were found to significantly predict the prognosis of patients with colorectal NENs treated surgically.
摘要BACKGROUND The prognosis of patients with appendiceal neuroendocrine tumors(ANETs) is related to lymph node(LN) metastasis and other factors.However,it is unclear how the number of examined LNs(ELNs) impact on survival.AIM To determine the factors affecting the cancer-specific survival(CSS) of patients with ANET and to evaluate the impact of the number of ELNs on survival.METHODS A total of 4583 ANET patients were analyzed in the Surveillance,Epidemiology,and End Results database.Univariate survival analysis was used to identify factors related to survival and the optimal number of ELNs and lymph node ratio(LNR) were determined by the Kaplan–Meier method.The survival difference was determined by CSS.RESULTS Except for sex,the other factors,such as age,year,race,grade,histological type,stage,tumor size,ELNs,LNR,and surgery type,were associated with prognosis.The 3-,5-,and 10-year CSS rates of ANET patients were 91.2%,87.5,and 81.7%,respectively(median follow-up period of 31 mo and range of 0-499 mo).There was no survival difference between the two surgery types,namely,local resection and colectomy or greater,in both stratifications of tumor size ≥ 2 cm(P = 0.523)and < 2 cm(P = 0.068).In contrast to patients with a tumor size < 2 cm,those with a tumor size ≥ 2 cm were more likely to have LN metastasis(χ~2 = 378.16,P < 0.001).The optimal number of ELNs was more than 11,7,and 18 for all patients,nodenegative patients,and node-positive patients,respectively.CSS rates of patients with a larger number of ELNs were significantly improved(≤ 10 vs ≥ 11,χ~2 =20.303,P < 0.001;≤ 6 vs ≥ 7,χ~2 = 11.569,P < 0.001;≤ 17 vs ≥ 18,χ~2 = 21.990,P < 0.001;respectively).ANET patients with an LNR value ≤ 0.16 were more likely to have better survival than those with values of 0.17-0.48(χ~2 = 48.243,P < 0.001) and 0.49-1(χ~2 = 168.485,P < 0.001).CONCLUSION ANET ≥ 2 cm are more likely to develop LN metastasis.At least 11 ELNs are required to better evaluate the prognosis.For patients with positive LN metastasis,18 or more LNs need to be detected and lower LNR values(LNR ≤ 0.16) indicate a better survival prognosis.
摘要BACKGROUND Mismatch repair deficient/microsatellite instability-high(MMR-D/MSI-H)colorectal cancers(CRCs)possess a distinctive genomic profile that results in a spectrum of phenotypic attributes setting them apart from their mismatch repair proficient(MMR-P)or microsatellite stable(MSS)counterparts.CRCs have several prognostic factors,including stage,tumor differentiation,location,lymphovascular and perineural invasion,tumor budding,tumor infiltrating lymphocytes,lymph node yield(LNY),and lymph node ratio(LNR).AIM To determine the unique phenotypic characteristics of MMR-D/MSI-H CRCs and leverage the conventional wisdom of LNY and LNR with the distinctive characteristics of MMR-D/MSI-H CRCs.METHODS This retrospective analysis involved 223 stage I-III CRC patients who underwent surgical resection without neoadjuvant treatment.Clinical and histological features were obtained from patient records and by re-examining the hematoxylin and eosin-stained slides.MMR/MSI status was evaluated for all patients using either MMR immunohistochemistry or MSI testing.RESULTS Of the 223 patients in our study,87(39.01%)were MMR-D/MSI-H CRCs while 136(60.99%)were MMR-P/MSS CRCs.The MMR-D/MSI-H CRCs exhibited significant statistical differences compared to the MMR-P/MSS CRCs in several factors,including location,stage,tumor budding,lymphovascular and perineural invasion,lymphocytic response,LNY,LNR,and size of uninvolved lymph nodes.LNY and LNR were significantly higher in MMR-D/MSI-H group compared with the MMR-P/MSS group(P=0.003 and P<0.001,respectively).Also,the interquartile range of the largest uninvolved lymph node was 1 cm(0.8 cm-1.2 cm)in MMR-D/MSI-H CRCs compared to 0.7 cm(0.6 cm-0.97 cm)in MMRP/MSS CRCs.The overall survival for the MMR-P/MSS CRC group was 71%at five years,and the MMR-D/MSIH CRC group was 92%at five years(P<0.001).CONCLUSION MMR-D/MSI-H CRCs possess a unique genomic profile that leads to distinct phenotypic characteristics,including an enhanced immune response.This distinctive profile underscores the substantial prognostic and predictive value of MMR-D/MSI-H status in CRC.