title: Struma Ovarii with a focus of follicular variant of papillary thyroid cancer: a case report.
abstract: BACKGROUND
  Struma Ovarii is a mature ovarian teratoma that consists mainly of thyroid tissue. Mature cystic teratomas may contain small amounts of thyroid tissue. Carcinomatous change in Struma Ovarii is extremely rare. No guidelines exist regarding the staging and treatment of malignant Struma Ovarii.
  
  
  OBJECTIVE
  To report a case of Struma Ovarii with a focus follicular variant papillary thyroid cancer.
  
  
  METHODS
  A 36 year old nulligravid patient presented with a pelvic mass palpated on her routine annual exam. Struma Ovarii with a focus of follicular variant of papillary thyroid cancer was diagnosed during the subsequent laparoscopy and ovarian cystectomy.
  
  
  METHODS
  She then underwent a staging laparotomy, total hysterectomy, bilateral salpingoophorectomy, and infracolic omentecomy.
  
  
  RESULTS
  Tumor markers, thyroid studies, thyroid scan, and whole body scans were normal.
  
  
  CONCLUSIONS
  Optimal treatment and surveillance of malignant struma ovarii has yet to be determined.
authors.affiliation: Department of Obstetrics and Gynecology, West Virginia University/ Women and Children's Hospital Charleston Area Medical Center, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Lao
authors.forename: Jun
authors.initials: J
authors.lastname: Koike
authors.forename: Subodhsingh
authors.initials: S
authors.lastname: Chauhan
authors.forename: Michael
authors.initials: M
authors.lastname: Schiano
authors.forename: Milton
authors.initials: M
authors.lastname: Plata
mesh_terms: D000328:Adult; D002276:Carcinoid Tumor / Q000469:parasitology* / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007044:Hysterectomy; D007813:Laparotomy; D009852:Omentum / Q000601:surgery; D010051:Ovarian Neoplasms / Q000473:pathology* / Q000601:surgery*; D010052:Ovariectomy; D012489:Salpingostomy; D013330:Struma Ovarii / Q000473:pathology* / Q000601:surgery*; D016896:Treatment Outcome