Abstract
Ectopic hepatocellular carcinoma (EHCC) demonstrates morphological and immunohistochemical features identical to conventional intrahepatic hepatocellular carcinoma (HCC), originating from ectopic liver tissue (EL), which is defined as a hepatic organ or tissue not connected to the mother liver. EHCC is a rare disease and difficult to diagnose preoperatively. Therefore, its epidemiology, treatment, and prognosis are not fully elucidated. Herein, we present a case report of a 52-year-old male diagnosed with unresectable EHCC who underwent transarterial chemoembolization (TACE) and succumbed to the disease 13 months after treatment, accompanied by a literature review summarizing the epidemiology while analyzing therapeutic strategies and prognostic outcomes in EHCC through synthesis of published case evidence.