title: Struma ovarii and peritoneal strumosis with thyrotoxicosis.
abstract: BACKGROUND
  Struma ovarii is a highly specialized form of mature ovarian teratoma consisting of thyroid tissue and exhibiting all the histological features of the thyroid gland. Malignant transformation of thyroid tissue in struma ovarii and metastasis are extremely uncommon. In rare cases, benign thyroid tissue may spread to the peritoneal cavity, and pathologic examination of the peritoneal implants shows multiple nodules of varying sizes of mature thyroid tissue similar to struma ovarii. This condition is termed "peritoneal strumosis."
  
  
  CONCLUSIONS
  We report a 49-year-old woman with struma ovarii complicated by peritoneal strumosis with thyrotoxicosis. After surgical resection of the struma ovarii and peritoneal strumosis the patient became euthyroid.
  
  
  CONCLUSIONS
  To the best of our knowledge this is the first report of a patient with peritoneal strumosis complicated by thyrotoxicosis. The relative contribution to circulating thyroid hormones by the patient's struma ovarii as compared to the peritoneal strumosis is not known.
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Dankook University, College of Medicine, Cheonan, Republic of Korea.
authors.forename: Dohee
authors.initials: D
authors.lastname: Kim
authors.forename: Hyun-Chul
authors.initials: HC
authors.lastname: Cho
authors.forename: Jin-Wan
authors.initials: JW
authors.lastname: Park
authors.forename: Won-Ae
authors.initials: WA
authors.lastname: Lee
authors.forename: You-Me
authors.initials: YM
authors.lastname: Kim
authors.forename: Phil-Sang
authors.initials: PS
authors.lastname: Chung
authors.forename: Seok-Gun
authors.initials: SG
authors.lastname: Park
authors.forename: Woong-Sik
authors.initials: WS
authors.lastname: Ahn
authors.forename: Sei-Jun
authors.initials: SJ
authors.lastname: Han
authors.forename: Choong-Hak
authors.initials: CH
authors.lastname: Park
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D010053:Ovary / Q000473:pathology; D010529:Peritoneal Cavity / Q000000981:diagnostic imaging / Q000473:pathology*; D011877:Radionuclide Imaging; D013330:Struma Ovarii / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D013971:Thyrotoxicosis / Q000150:complications* / Q000532:radiotherapy / Q000601:surgery; D051598:Whole Body Imaging