title: Ectopic Hepatocellular Carcinoma Arising from the Peritoneum in a Patient with a History of Oropharyngeal Cancer: A Case Report.
abstract: A subphrenic mass was noted on a surveillance computed tomography (CT) scan of a 65-year-old man who had achieved complete remission of oropharyngeal cancer after concurrent chemoradiotherapy. The mass was 3.2 cm in size and showed a multilobular enhancing pattern along the peritoneal lining. The patient was negative for hepatitis B surface antigen and anti-hepatitis C virus antibody. His carcinoembryonic antigen level was within the normal range. Contrast-enhanced CT revealed no mass in the liver. He underwent surgery, and a pale yellowish soft tumor measuring 3.8 × 3.2 × 1.2 cm was resected. Histologically, the tumor was confirmed to be a hepatocellular carcinoma. Currently, he is doing well, and has been followed up without any signs of recurrence.
authors.affiliation: Division of Hematology-Oncology, Department of Internal Medicine, South Korea.
authors.forename: Ji Young
authors.initials: JY
authors.lastname: Lee
authors.affiliation: Department of General Surgery, Inje University College of Medicine, Busan, South Korea.
authors.forename: Kwang Hee
authors.initials: KH
authors.lastname: Kim
authors.affiliation: Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea.
authors.forename: Mi Seon
authors.initials: MS
authors.lastname: Kang
authors.affiliation: Division of Hematology-Oncology, Department of Internal Medicine, South Korea.
authors.forename: Ki Hyang
authors.initials: KH
authors.lastname: Kim
keywords: Ectopic hepatocellular carcinoma; Ectopic liver