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Background/Purpose: Hepatectomy remains the standard treatment for primary hepatocellular carcinoma (HCC). However, its role in the treatment of multinodular HCC (MNHCC) is unknown. Methods: The study consisted of 599 patients undergoing curative hepatic resection for HCC between October 1990 and June 2006, in which 112 patients had MNHCC (tumor number ≥ 2). The type of MNHCC was classified into: A, nodules involving one or two adjoining segments; B, large tumor with satellite nodules involving three or more segments; C, three or fewer nodules that are scattered in remote segments; and D, more than three separate tumors. Univariate and multivariate analyses were used to identify the prognostic factors related to postoperative survival. During the same period of time, and from our database of 178 patients with pathologically proven MNHCC who were undergoing nonsurgical multidisciplinary therapy, 48 patients with serum albumin level ≥ 3.5 g/dL, total bilirubin < 2 mg/dL, tumor number ≤ 3, and tumor size ≤ 5 cm were compared with 38 patients with the same condition treated with hepatectomy, in which 16 received one-block resection and 22 underwent multiple-site resection. Results: The overall 1-, 3- and 5-year survival rates for patients with single-tumor HCC and MNHCC were 88.0%, 69.2% and 58.4%, and 86.1%, 55.5% and 29.9%, respectively (p < 0.001). Alpha-fetoprotein > 400 ng/mL, total tumor size > 5 cm, largest tumor size > 5 cm, total tumor number > 3, microvascular invasion, non-A type MNHCC and multiple-site resection were poor prognostic factors for MNHCC in the hepatectomy group. Multivariate analysis revealed that only multiple-site hepatic resection was an independent adverse factor related to postoperative survival. In addition, patients who underwent one-block resection had significantly better survival compared with the nonsurgical group (p = 0.0016), but the multiple-site resection subgroup did not. Conclusion: The prognosis of MNHCC is poor in comparison with that of single-nodular HCC. Hepatectomy is the treatment of choice if the tumors can be removed by one-block resection and liver function reserve is acceptable. |
