Anatomic Resection Independently Improves Long-Term Survival in Patients with T1–T2 Hepatocellular Carcinoma
Tóm tắt
This study aimed to evaluate the effect of anatomic resection on long-term outcomes in patients with pathologic T1–T2 (pT1–T2) hepatocellular carcinoma. A retrospective analysis of 158 consecutive patients who underwent either anatomic (n = 95) or nonanatomic (n = 63) resection for pT1–T2 hepatocellular carcinoma was conducted. Anatomic resection was defined as the complete removal of at least one Couinaud segment containing the tumor; nonanatomic resection was defined as removal of the tumor plus a rim of nonneoplastic liver parenchyma. The median follow-up time was 83 months. Patients who underwent anatomic resection were characterized by lower prevalence of cirrhosis (P = .015), more favorable hepatic function (P = .001), larger tumor size (P = .029), and higher prevalence of vascular invasion (P = .008) compared with patients who underwent nonanatomic resection. Anatomic resection provided better survival (median survival time, 122 months) than nonanatomic resection (median survival time, 76 months; P = .0358). Patients who underwent anatomic resection had better disease-free survival (P = .0121). Anatomic resection independently improved both survival (hazard ratio, .46; P = .003) and disease-free survival (hazard ratio, .55; P = .008). When stratified for pT classification, the effectiveness of anatomic resection remained only in patients with pT2 tumors in terms of survival (P = .0012) and disease-free survival (P = .0004). Anatomic resection independently improves long-term survival in patients with T1–T2 hepatocellular carcinoma, probably because of the clearance of venous tumor thrombi within the resected domain.
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