Related Experiment Video
Updated: Jul 5, 2026
Application of the En Bloc Concept Combined with Anatomic Resection in Laparoscopic Hepatectomy
Published on: March 10, 2023
Anatomic versus limited nonanatomic resection for solitary hepatocellular carcinoma
Kuniya Tanaka1, Hiroshi Shimada, Chizuru Matsumoto
1Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan. ktrj112@urahp.yokohama-cu.ac.jp
Background:
Although anatomic liver resection is preferred when treating hepatocellular carcinoma (HCC), evidence that it improves survival when compared with an adequate nonanatomic resection is lacking. The purpose of this study was to compare the survival impact of anatomic versus nonanatomic resection in patients with solitary HCC.
Patients And Methods:
Clinicopathologic data were available for 125 patients who underwent hepatectomy for a solitary HCC confined to 1 or 2 Couinaud's segments. These patients were divided into 2 groups based on the hepatectomy procedure: anatomic (n = 83) and nonanatomic (n = 42) resection.
Results:
No differences were detected either in the hepatic recurrence rates (P = .38) or in the overall survival rates (P = .34) between the anatomic group and the nonanatomic group. The hepatectomy procedure (anatomic vs nonanatomic resection) did not affect survival in either univariate (P = 0.34) or multivariate analysis (relative risk, 1.574; P = .22). The proportion of patients who survived after recurrence was greater in the nonanatomic (15/42) than the anatomic group (13/83; P = .049), and the median survival time after recurrence was greater in patients who underwent nonanatomic resection (991 days; range, 131-4073 days) than in patients with anatomic resection (310 days; range, 48-1887 days; P = .045).
Conclusions:
No superiority was seen in survival when HCC was treated by anatomic resection. Maintaining adequate liver function regardless of whether the resection is anatomic or not may be of greater importance.
