title: Epithelioid angiomyolipoma of the liver: a case report.
abstract: Epithelioid angiomyolipoma (EAML) of liver is a rare neoplasm. Hepatic EAML is often misdiagnosed as other neoplasms such as hepatocellular carcinoma due to non-specific clinical and radiologic features. The morphologic features under microscope and immunohistochemistry staining profile are important in the diagnosis EAML. Here, we report a case of 52-year-old man who found 1.2 cm mass in liver by routine checkup. On the impression of hepatocellular carcinoma, lateral sectionectomy of the liver was done. Microscopically, the tumor is composed of predominant epithelioid cells with vascular component and foamy cells. These cells were positive for HMB45, MelanA, and smooth muscle actin and negative for epithelial membrane antigen. The final diagnosis was hepatic EAML.
authors.affiliation: Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea.
authors.forename: Soo Yeon
authors.initials: SY
authors.lastname: Lee
authors.affiliation: Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea.
authors.forename: Baek-Hui
authors.initials: BH
authors.lastname: Kim
mesh_terms: D018207:Angiomyolipoma / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D008099:Liver / Q000000981:diagnostic imaging / Q000473:pathology; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D058965:MART-1 Antigen / Q000378:metabolism; D008297:Male; D058950:Melanoma-Specific Antigens / Q000378:metabolism; D008856:Microscopy, Fluorescence; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D058951:gp100 Melanoma Antigen
chemical_list: D058965:MART-1 Antigen; C548667:MLANA protein, human; D058950:Melanoma-Specific Antigens; C548637:PMEL protein, human; D058951:gp100 Melanoma Antigen
keywords: Angiomyolipoma; Liver; Perivascular epithelioid cell neoplasms