Clinicopathologic features and postoperative prognosis of multicentric small hepatocellular carcinoma1

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Abstract
Assessment of clinicopathologic characteristics and postoperative prognoses for patients with multicentric hepatocellular carcinoma (HCC) is important to determine not only a need to operate, but also an appropriate treatment after hepatic resection. Between May 1990 and April 1998, among 116 patients with an initial hepatectomy for HCC measuring 3 cm or less in maximum diameter, 34 patients had multicentric HCC (MC group), and 82 patients had single nodular HCC (SN group). To clarify the clinicopathologic features of patients in the MC group versus the SN group, we compared both the clinicopathologic parameters and the postoperative prognosis after curative hepatectomy between the two groups. The percentages of patients positive for hepatitis B surface antigen and hepatitis C virus antibody were not significantly different between the two groups. No differences were noted in pathologic characteristics of the main tumor or tumor markers. On the other hand, in the MC group, the percentage of patients evaluated in a Child's classification as either B or C was significantly higher (p < 0.05) than that of patients in the SN group, indicating that patients with multicentric HCC have a poor hepatic functional reserve. Both survival and disease-free survival of patients in the MC group who underwent a curative hepatectomy did not differ statistically from those in the SN group. Our results indicate that hepatic resection is useful, even for patients with multicentric HCC, if a curative hepatectomy can be performed and liver function can be saved, despite their poor hepatic functional reserve.