title: Undifferentiated (embryonal) sarcoma of liver in adult: a case report.
abstract: We report a case of undifferentiated (embryonal) sarcoma of the liver (UESL), which showed cystic formation in a 20-year-old man with no prior history of any hepatitis or liver cirrhosis. He was admitted with abdominal pain and a palpable epigastric mass. The physical examination findings were unremarkable except for a tenderness mass and the results of routine laboratory studies were all within normal limits. Abdominal ultrasound and computed tomography (CT) both showed a cystic mass in the left hepatic lobe. Subsequently, the patient underwent a tumor excision and another two times of hepatectomy because of tumor recurrence. Immunohistochemical study results showed that the tumor cells were positive for vimentin, alpha-1-antichymotrypsin (AACT) and desmin staining, and negative for alpha-fetoprotein (AFP), and eosinophilic hyaline globules in the cytoplasm of some giant cells were strongly positive for periodic acid-Schiff (PAS) staining. The pathological diagnosis was UESL. The patient is still alive with no tumor recurrence for four months.
authors.affiliation: Department of Hepatobiliary Surgery, the 2nd Affiliated Hospital, China Medical University, Shenyang 110004, Liaoning Province, China. daicl-sy@163.net
authors.forename: Chao-Liu
authors.initials: CL
authors.lastname: Dai
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
authors.forename: Hong
authors.initials: H
authors.lastname: Shu
authors.forename: Yong-Qing
authors.initials: YQ
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000328:Adult; D000367:Age Factors; D002454:Cell Differentiation; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology* / Q000601:surgery; D008297:Male; D009373:Neoplasms, Germ Cell and Embryonal / Q000473:pathology* / Q000601:surgery; D012509:Sarcoma / Q000473:pathology* / Q000601:surgery