title: Carcinosarcoma of the gallbladder manifesting as cholangitis due to hemobilia.
abstract: BACKGROUND
  Carcinosarcomas of the gallbladder are rare tumors that are characterized by malignant epithelial and mesenchymal components, and preoperative diagnosis of carcinosarcoma of the gallbladder remains difficult.
  
  
  METHODS
  We recently encountered a case of carcinosarcoma of the gallbladder with osteoid and chondroid differentiation, manifesting as cholangitis due to hemobilia.
  
  
  CONCLUSIONS
  Preoperative computed tomography and magnetic resonance imaging indicated the cause of cholangitis and provided qualitative information regarding the two components of the tumor.
authors.affiliation: Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata, Okayama, 700-8558, Japan. sada@md.okayama-u.ac.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sadamori
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Fujiwara
authors.forename: Takehiro
authors.initials: T
authors.lastname: Tanaka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yanai
authors.forename: Daisuke
authors.initials: D
authors.lastname: Satoh
authors.forename: Takahito
authors.initials: T
authors.lastname: Yagi
authors.forename: Toshiyoshi
authors.initials: T
authors.lastname: Fujiwara
mesh_terms: D000369:Aged, 80 and over; D002296:Carcinosarcoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D002761:Cholangitis / Q000175:diagnosis / Q000209:etiology*; D002763:Cholecystectomy; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005706:Gallbladder Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D006431:Hemobilia / Q000175:diagnosis / Q000209:etiology*; D006498:Hepatectomy / Q000379:methods; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed