Objective To study the impact factors on prognosis of patients with gallbladder adenocarcinoma after surgery.Methods The clinicopathological data of 1 285 patients who underwent surgery and were histologically confirmed to have gallbladder adenocarcinoma from 2004 to 2014 was extracted from the SEER database of US National Cancer Institute.Life table was used to calculate the survival rate.Kaplan-Meier was used to construct the survival curves.Univariate and Cox multivariate regression analysis were applied to evaluate the prognostic factors.The univariate analysis was evaluated by the log-rank x2 test.Results The median survival of 1 285 patients with gallbladder adenocarcinoma was 32 months.The 1-,3-and 5-year survival rates were 77.5％,46.8％ and 36.5％,respectively.The 5-year survival rates of stage Ⅰ,Ⅱ,ⅢA,ⅢB,ⅣA,ⅣB were 72.7％,63.2％,24.6％,20.5％,0 and 5.1％,respectively.The median survival of stage ⅢA,ⅢB,ⅣA and ⅣB were 22 months,19 months,12 months and 16 months,respectively.The differences were statistically significant (P ＜ O.05).Univariate analysis showed that sex,age,degree of differentiation,tumor size,T staging,N staging,number of lymph nodes detected,lymph node metastasis rate,location of lymph node metastasis,and American Joint Commission on cancer (AJCC) staging were significantly associated with prognosis (P ＜ 0.05).There was no significant differences among race and marital status with prognosis (P ＞ 0.05).Multivariate Cox regression analysis showed that sex (male),age (≥ 65 years),degree of differentiation,T staging,number of lymph nodes detected (＜ 4)and AJCC staging were independent risk factors affecting prognosis of patients with gallbladder adenocarcinoma (P ＜ 0.05).Conclusions With increase in AJCC staging,the survival rates in patients with gallbladder adenocarcinoma after surgery decreased gradually.Parameters including sex,age,T staging,number of lymph nodes detected and AJCC staging were independent factors affecting prognosis of patients with gallbladder adenocarcinoma after surgery.

Objective To study the survival of patients with pancreatic head carcinoma undergoing surgery,and to evaluate the clinicopathological factors associated with prognosis.Methods The data of 4 814 patients who underwent surgery for pancreatic head carcinoma from 2004 to 2009 were extracted from the US SEER database.The life table was used to calculate the survival rate at 5-years.The Kaplan-meier method was used to construct the survival curves of the patients.The univariate and Cox multivariate regression analysis were applied to evaluate the prognostic factors.and the univariate analysis was evaluated by the log-rank x2 test.Results The overall 5-year survival of 4 818 pancreatic head carcinoma patients was 16.3％.The median survival was 18.9 months,and the 5-year survival rates of the stage Ⅰ A,Ⅰ B,Ⅱ A,Ⅱ B,Ⅲ and Ⅳ patients were 38.8％,35.3％,21.8％,12.2％,9.1％,and 7.3％,respectively.The difference was statistically significant (x2 =287.702;P ＜ 0.05).The factors including sex,age,years of diagnosis,pathological grading,tumor size,extent of invasion,lymph node metastasis,distant metastasis,and pathological pattern (all P ＜ 0.05) influenced the survival rate on univariate analysis.There was no clear correlation between race,number of lymph node examined and prognosis.The factors including sex,age,years of diagnosis,pathological grading,tumor size (AJCC 8th),range,extent of invasion,lymph node metastasis,distant metastasis,and pathological pattern (all P ＜ 0.05) were independent prognostic factors on multivariate analysis.Conclusions With the increase of TNM staging,the overall survival of patients with pancreatic head carcinoma undergoing surgery gradually decreased.Factors including sex,age,years of diagnosis,pathological grading,tumor size,extent of invasion,lymph node metastasis,distant metastasis,and pathological pattern were independent prognostic factors of overall survival.