title: Malignant transformation of an ovarian mature cystic teratoma: computed tomography findings.
abstract: BACKGROUND
  The malignant transformation of an ovarian mature cystic teratoma is rare. We presented such a case of a 46-year-old woman with characteristic computed tomography (CT) findings.
  
  
  METHODS
  The patient had suffered from fullness and tenderness of the lower abdomen for one year. A high serum CA-125 level was noted. Computed tomography images showed a left adnexal mass with fat, calcification and soft tissue components, and areas of invasion through the teratoma wall.
  
  
  RESULTS
  The histologic diagnosis was compatible with a squamous cell carcinoma arising from a mature cystic teratoma of the ovary.
authors.affiliation: School of Medicine, Taipei Medical University, Taipei, Taiwan, ROC.
authors.forename: Pei-Fang
authors.initials: PF
authors.lastname: Lai
authors.forename: Shu-Chiang
authors.initials: SC
authors.lastname: Hsieh
authors.forename: Jerry Chin-Wei
authors.initials: JC
authors.lastname: Chien
authors.forename: Chia-Liang
authors.initials: CL
authors.lastname: Fang
authors.forename: Wing P
authors.initials: WP
authors.lastname: Chan
authors.forename: Chun
authors.initials: C
authors.lastname: Yu
mesh_terms: D000273:Adipose Tissue / Q000000981:diagnostic imaging / Q000473:pathology; D018394:CA-125 Antigen / Q000097:blood; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D005260:Female; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods*; D001743:Urinary Bladder / Q000000981:diagnostic imaging / Q000473:pathology
chemical_list: D018394:CA-125 Antigen