Analysis of the Extent of Resection for Adenocarcinoma of the Gallbladder

Abstract

Gallbladder cancer has historically been considered an incurable malignancy; although, extended resection has been associated with cure in selected patients. However, the optimal extent of resection is unknown. The objective of this study was to analyze the impact of the extent of resection for gallbladder adenocarcinoma on disease-specific survival (DSS) and perioperative morbidity. Analysis of a prospective hepatobiliary surgery database identified patients undergoing surgical resection for gallbladder adenocarcinoma from 1990 to 2002. Clinicopathologic factors including extent of resection were analyzed for their association with DSS and perioperative morbidity. Long-term outcome was evaluable in 104 patients. With median follow-up of 58 months for survivors, the actuarial 5-year DSS was 42%. Thirty-six patients (35%) underwent major hepatectomy, but in 15 this was not mandatory to clear all disease. Sixty-eight patients (65%) underwent common bile duct (CBD) excision, but 32 were performed empirically. Twenty-one patients (20%) underwent en bloc resection of adjacent organs other than the liver. The performance of a major hepatectomy or a CBD excision was not associated with other clinicopathologic variables or long-term survival. Resection of adjacent organs were associated with advanced T stage but not with survival. T stage, N stage, histologic differentiation, and CBD involvement were independently associated with survival. Major hepatectomy and CBD excision were significantly associated with perioperative morbidity. We conclude that tumor biology and stage, rather than extent of resection, predict outcome after resection for gallbladder cancer. Major hepatic resections, including major hepatectomy and CBD excision, are appropriate when necessary to clear disease but are not mandatory in all cases.