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Laparoscopically Resected Ectopic Hepatocellular Carcinoma Mimicking Subepithelial Tumor of Stomach: A Case Report.
Ectopic hepatocellular carcinoma (HCC) can be defined as an HCC arising from hepatic parenchyma located in an extrahepatic organ or tissue. Fewer than 100 cases of ectopic liver have been reported. In 30 of these cases, HCC was detected in ectopic tissue. The author describes a case of ectopic HCC mimicking subepithelial tumor (SET) of the stomach successfully treated by laparoscopic resection. This case report also provides a pertinent review of the literature. A 61-year-old male was referred to our department for the management of an intra-abdominal mass found on abdominal computed tomography performed at a local medical center due to a 2-month history of vague abdominal pain. Abdominal magnetic resonance imaging and computed tomography showed a 7.2-cm sized heterogenous mass over the left subphrenic space adjacent to the stomach. Esophagogastroduodenoscopy showed a huge subepithelial mass at the fundus of the stomach. Based on the above findings, the diagnosis of SET of the stomach such as gastrointestinal stromal tumor or leiomyoma was suspected. Laparoscopic surgery was performed for definite diagnosis and treatment of the huge SET of the stomach. Histologic diagnosis was ectopic HCC of the trabecular type. Its histologic grade was consistent with Edmondson grade II. Although ectopic HCC is quite rare tumor of the stomach, it should be considered in the differential diagnosis of other abdominal mass-like lesions. Currently, with advances of laparoscopic surgery, laparoscopic resection for complete excision of ectopic HCC is possible with acceptable results.
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