title: Hepatoid carcinoma colliding with a liposarcoma of the left colon serosa presenting as an abdominal mass.
abstract: BACKGROUND
  Hepatoid adenocarcinoma (HAC) is a peculiar type of extrahepatic adenocarcinoma generally characterized by adenocarcinomatous and hepatocellular carcinoma (HCC)-like foci. Stomach is the most frequent site where hepatoid adenocarcinoma occurs, although it has been described in many other organs. On the other side, liposarcoma is a rare, malignant tumor that develops from fat cells.
  
  
  METHODS
  We describe here a case of hepatoid carcinoma in collision with a liposarcoma of the left colon serosa in a 71-year-old man. It presented as an abdominal mass involving several organs, falsely mimicking metastatic colonic adenocarcinoma. Recognition of this entity was evident on microscopic evaluation following surgery. The patient had an objective response following liposomal antracycline chemotherapy, with a 3-year overall survival.
  
  
  CONCLUSIONS
  To our knowledge, this is the first case of a hepatoid tumor colliding with a liposarcoma of the left colon serosa reported to date.
authors: Cattedra di Oncologia Medica, Seconda Università degli Studi di Napoli Ospedale Da Procida, Salerno, Naples, Italy. michele.orditura@unina2.it
authors: Michele
authors: M
authors: Orditura
authors: Eva
authors: E
authors: Lieto
authors: Francesca
authors: F
authors: Ferraraccio
authors: Giuseppe
authors: G
authors: De Cataldis
authors: Teresa
authors: T
authors: Troiani
authors: Paolo
authors: P
authors: Castellano
authors: Giuseppe
authors: G
authors: Catalano
authors: Fortunato
authors: F
authors: Ciardiello
authors: Gennaro
authors: G
authors: Galizia
authors: Ferdinando
authors: F
authors: De Vita
mesh_terms: D000008:Abdominal Neoplasms / Q000473:pathology*; D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000473:pathology*; D003110:Colonic Neoplasms / Q000473:pathology*; D006801:Humans; D008080:Liposarcoma / Q000473:pathology*; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000473:pathology*