title: A case of Turner syndrome with congenital hypothyroidism untreated until age 38 years.
abstract: OBJECTIVE
  The effect of thyroid hormone on human growth and maturation is considered 'permissive'. To evaluate the effect of a prolonged thyroid hormone defect, especially in the pubertal period, a woman with untreated congenital hypothyroidism underwent studies of thyroid function and bone maturation for the first time at age 38 years 10 months and received thyroid hormone replacement.
  
  
  RESULTS
  The karyotype was 45,X/46,XX. Menstruation had occurred for 10 years, from menarche until she was about 31 years old. Epiphyseal closure of the left hand was incomplete. The serum thyroid hormone level was virtually undetectable, and her thyroid gland was not detectable in the normal position by ultrasonography. Her height increased by 3.5 cm in the first 9 months after starting thyroid hormone replacement; after 11 months, closure of the epiphysis was complete.
  
  
  CONCLUSIONS
  Thyroid hormone is necessary to achieve bone maturation and epiphyseal closure, but its role is only permissive.
authors.affiliation: Department of Pediatrics, Niigata Prefectural Koide Hospital, Niigata, Japan. yamato_it@mail.tiara.or.jp
authors.forename: Nori
authors.initials: N
authors.lastname: Ishikawa
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Tanaka
authors.forename: Kinya
authors.initials: K
authors.lastname: Hashimoto
authors.forename: Masaki
authors.initials: M
authors.lastname: Wada
mesh_terms: D000328:Adult; D001827:Body Height / Q000187:drug effects; D003409:Congenital Hypothyroidism; D005260:Female; D006132:Growth Plate / Q000000981:diagnostic imaging / Q000503:physiopathology; D006225:Hand / Q000000981:diagnostic imaging; D006801:Humans; D007037:Hypothyroidism / Q000150:complications* / Q000188:drug therapy; D007621:Karyotyping; D008572:Menarche; D011859:Radiography; D013961:Thyroid Gland / Q000000981:diagnostic imaging; D013974:Thyroxine / Q000097:blood / Q000627:therapeutic use; D014424:Turner Syndrome / Q000150:complications* / Q000175:diagnosis / Q000235:genetics / Q000503:physiopathology*; D014463:Ultrasonography
chemical_list: D013974:Thyroxine