title: Mediastinal parathyroid cyst with tracheal constriction.
abstract: A 63-year-old man visiting a physician for slight dyspnea, attributed to a lump on his neck, was found in ultrasonography and computed tomography to have a cyst extending from the left lobe of the thyroid gland to the superior mediastinum. Radiography showed right deviation of the trachea. The cyst disappeared after fine-needle aspiration, but cyst fluid subsequently reaccumulated and he was admitted to our hospital. No abnormalities were detected in tests of thyroid and parathyroid function or blood chemical analysis. The cyst was surgically removed and diagnosed as a nonfunctioning parathyroid cyst, based on the high-intact parathyroid hormone in cyst fluid. The patient recovered fully and has shown no recurrence in the 11 months to data since surgery.
authors.affiliation: Department of Thoracic Surgery, National Sanyo Hospital, 685 Higashikiwa, Ube, Yamaguchi 755-0241, Japan.
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Umemori
authors.forename: Shigeki
authors.initials: S
authors.lastname: Makihara
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Kotani
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Washio
mesh_terms: D003560:Cysts / Q000150:complications* / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D008297:Male; D008476:Mediastinal Cyst / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D008875:Middle Aged; D010279:Parathyroid Diseases / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D014135:Tracheal Stenosis / Q000209:etiology*; D016896:Treatment Outcome