title: CT findings of clear cell carcinoma of the ovary.
abstract: OBJECTIVE
  The purpose of this article was to retrospectively evaluate computed tomographic (CT) findings in patients with pathologically proved clear cell carcinoma of the ovary.
  
  
  METHODS
  CT scans of seven patients (age range, 28-79 years; mean age, 46 years) with nine lesions of histologically proved primary ovarian clear cell carcinoma of the ovary were retrospectively evaluated by two radiologists in consensus. Scans were evaluated for the laterality, size, mass characteristic, margin, attenuation of the cystic portion, internal architecture, and presence of lumen protruding mass.
  
  
  RESULTS
  Tumors were unilateral in five patients. The average size of the tumors was 8.6 cm (range, 2.6-12.1 cm). All the masses showed mainly cystic appearance. All nine masses had smooth margin. Average attenuation of the cystic portion of the masses was 24.2 HU (Hounsfield unit) (range, 13-34 HU). Tumors usually appeared as unilocular cystic mass (n=6). Lumen protruding masses appeared in seven tumors.
  
  
  CONCLUSIONS
  On CT scans, primary ovarian clear cell carcinomas appeared as large unilocular, mainly cystic, smooth marginated mass with lumen protruding solid portion and high-attenuated cystic portion.
authors.affiliation: Research Institute and Hospital, National Cancer Center, Goyang, Gyenggi, Korea. hjchoi@ncc.re.kr
authors.forename: Hyuck Jae
authors.initials: HJ
authors.lastname: Choi
authors.forename: Joo-Hyuk
authors.initials: JH
authors.lastname: Lee
authors.forename: Jong
authors.initials: J
authors.lastname: Seok Lee
authors.forename: Joon-Il
authors.initials: JI
authors.lastname: Choi
authors.forename: Sokbom
authors.initials: S
authors.lastname: Kang
authors.forename: Sun
authors.initials: S
authors.lastname: Lee
authors.forename: Sang-Soo
authors.initials: SS
authors.lastname: Seo
authors.forename: Sang-Yoon
authors.initials: SY
authors.lastname: Park
mesh_terms: D000328:Adult; D000368:Aged; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed