Histopathological findings in cholecystectomies specimens: A single institution study of 20 584 cases

Background: The histopathological examination of cholecystectomy specimens has not been standardized with a debate concerning the routine and the selective approach. The aim of this study was to assess the information obtained from routine histopathological examination of cholecystectomy specimens. Methods: All histopathological reports of cholecystectomy specimens between January 2003 and December 2016 were analyzed, including a clinical diagnosis of benign gallstone disease or cholecystitis. Results: A total of 20,584 reports were examined. The mean age of patients was 54.2 years. Patients aged more than 60 years represent 37.6% of the study population. Of all patients, 15,973 (77.6%) were females. Incidental gallbladder cancers (GBC) were present in 155 cholecystectomies specimens (0.8%). 67.1% of GBC are at T2 and T3 stage. Granulomatous cholecystitis was diagnosed in only 19 cases (0.1%). GBC were more prevalent in older patients (P < 10(-6)) and cholesterolosis was more prevalent in young patients (P < 10(-6)). There was no gender predilection for GBC (P = 0.739). Conclusions: The rate of incidental gallbladder carcinoma in our study is low, yet, we found a higher proportion of T2 and T3 carcinomas stage. Granulomatous cholecystitis may need further investigations and treatments. When a selective approch of histopathological examination of cholecystectomy specimens is used, it is important to take into account that clinical parameters are significantly associated with gallbladder cancer. (C) 2018 First Affiliated Hospital, Zhejiang University School of Medicine in China. Published by Elsevier B.V. All rights reserved.