title: Primary peritoneal malignant mixed müllerian tumor associated with colonic adenocarcinoma.
abstract: BACKGROUND
  Primary extragenital malignant mixed Müllerian tumors (MMMTs) are very rare neoplasms, with only 28 documented cases in the literature. Two cases coexisted with a colonic adenocarcinoma.
  
  
  METHODS
  We report on a primary peritoneal MMMT diagnosed shortly after resection of a colonic adenocarcinoma in an 85-year-old woman who presented with a large omental mass. Microscopic examination revealed a biphasic tumor with malignant carcinomatous and sarcomatous components, confirmed immunohistochemically, consistent with MMMT. Despite optimal debulking and uneventful postoperative recovery, the patient died of her disease shortly after surgery due to recurrent disseminated disease.
  
  
  CONCLUSIONS
  This is the third case in the literature of primary extragenital MMMT occurring in association with colonic adenocarcinoma. This coexistence may be incidental, but it may also imply a possible linkage between these two tumors.
authors.affiliation: Department of Pathology, Soroka Medical Center and Faculty of Health Schiences, Beer-Sheva, Israel.
authors.forename: R
authors.initials: R
authors.lastname: Shaco-Levy
authors.forename: N
authors.initials: N
authors.lastname: Sion-Vardy
authors.forename: B
authors.initials: B
authors.lastname: Piura
mesh_terms: D000230:Adenocarcinoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D003110:Colonic Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D018200:Mixed Tumor, Mullerian / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D009378:Neoplasms, Multiple Primary / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D010534:Peritoneal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology