title: Magnetic resonance imaging of endometrial cancer and clear cell cancer.
abstract: OBJECTIVE
  We attempt to clarify specific imaging findings useful for differential diagnosis between endometrioid cancer and clear cell cancer.
  
  
  METHODS
  We examined magnetic resonance imaging features on 11 endometrioid cancer and 9 clear cell cancer patients. We compared them, focusing on the locularity, characteristic and growth pattern of solid components, and association with endometrial diseases.
  
  
  RESULTS
  Endometrioid cancer had a predominantly multilocular appearance, but clear cell cancer showed almost equally multilocular and unilocular appearances. For the growth pattern, endometrioid cancer in 6 patients demonstrated a "centric pattern" and an "eccentric pattern" in 4, whereas clear cell cancer showed predominantly an eccentric pattern. An internal slit in the solid component was seen in 4 endometrioid cancer patients but not seen in any of the patients with clear cell cancer.
  
  
  CONCLUSIONS
  The magnetic resonance imaging appearance of the internal slit in solid components and the presence of endometrial disease are key factors in differentiating endometrioid cancer from clear cell cancer, although lesion locularity and growth pattern are not specific in both.
authors.affiliation: Department of Radiology, Gifu University School of Medicine, Gifu, Japan. manatomo@chuno.gfkosei.or.jp
authors.forename: Tomoko
authors.initials: T
authors.lastname: Manabe
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Hirose
authors.forename: Takuji
authors.initials: T
authors.lastname: Kiryuu
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Koudo
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Hoshi
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018269:Carcinoma, Endometrioid / Q000175:diagnosis*; D003287:Contrast Media / Q000008:administration & dosage; D003937:Diagnosis, Differential; D016889:Endometrial Neoplasms / Q000175:diagnosis*; D004717:Endometrium / Q000473:pathology; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies
chemical_list: D003287:Contrast Media