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The most common cause of liver transplantation in Iran is hepatitis B positive cirrhosis, and it also one of the major and important causes of hepatocellular carcinoma (HCC). Most cases with HCC follow a multistep sequence. Morphologic lesions during hepatocarcinogenesis include dysplastic lesions and small cancerous lesions (2 cm in diameter; early HCC). However, insufficient information is available on the incidence of HCC and its precursors in hepatitis B-related cirrhosis.In this study, we determined the incidence of HCC and its precursors in hepatitis B-related cirrhosis in the largest liver transplant center in Iran.In a two-year study, all explanted livers of patients with hepatitis B virus (HBV)-positive cirrhosis were completely sectioned and examined. Each specimen was investigated grossly and microscopically to determine any abnormal nodule or cellular changes (at least 15 sections from each liver).Among all explanted cirrhotic livers (103 livers) during the study period (2014 - 2015), 92 (89.3%) had dysplastic foci with large cell changes (LCC), 57 (55.3%) of which showed small cell changes (SCC) as well. Thirty-nine cases (37.9%) had low-grade dysplastic nodules (LGDN), 38 (36.9%) high-grade dysplastic nodules (HGDN), 19 (18.4%) were early hepatocellular carcinoma (eHCC), and 21 (20.4%) were hepatocellular carcinoma more than 2 cm. All the cases with eHCC and HCC of more than 2 cm also had SCC, LCC, HGDN, and LGDN. Thirteen cases of eHCC were accompanied with HCCs more than 2 cm, and 6 cases of eHCC did not show any HCC (larger than 2 cm).SCC, LGDN, and HGDN are common associated findings and precursors of HCC in livers infected with hepatitis B. A strict follow-up and a precise and thorough sampling of livers with SCC and any abnormal dysplastic nodules (DNs), especially those larger than 1 cm, are highly recommended because these DNs are highly associated with malignancy.

Hepatocellular Carcinoma and Its Precursors in 103 HBV-Related Cirrhotic Explanted Livers: A Study from South Iran