title: A case report of a patient with hyperparathyroidism and presumed sellar/parasellar brown tumor.
abstract: OBJECTIVE
  This is a report of an 18 year old black female patient with primary hyperparathyroidism and a sellar/parasellar brown tumor and unusual nonresponsiveness to 1,25 vitamin D administration post parathyroidectomy but responsiveness postoperatively to 25 vitamin D administration.
  
  
  METHODS
  Report the history, physical exam, laboratory, and radiological findings of the patient with a possible sellar/parasellar brown tumor and review the pertinent literature.
  
  
  RESULTS
  Female patient presented with hyperparathyroidism and brown tumors of the ribs and sternum which have disappeared one and one-half years post parathyoidectomy with resolution of postoperative hypocalcemia. She was found, on magnetic resonance imaging (MRI), to have a 3.4 x 4.7 cm sellar mass which appeared to be a brown tumor as it has decreased over a twelve month period of normal calcium. Postoperatively, she had an unusual response to 1,25 vitamin D in that her calcium did not increase with massive doses (2 mcg) but with 25 vitamin D only.
  
  
  CONCLUSIONS
  A patient is reported with a probable sellar/parasellar brown tumor and hyperparathyroidism. After initial parathyroidectomy the sellar/parasellar brown tumor still persisted and did not respond to 1,25 vitamin D but did respond to 25 vitamin D administration.
authors.affiliation: George Washington University, Alexandria, VA, USA. hlando@yahoo.com
authors.forename: H M
authors.initials: HM
authors.lastname: Lando
mesh_terms: D000236:Adenoma / Q000150:complications* / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D000293:Adolescent; D003116:Color; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D010002:Osteitis Fibrosa Cystica / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D016105:Parathyroidectomy; D010911:Pituitary Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D012272:Ribs; D012658:Sella Turcica / Q000473:pathology / Q000601:surgery; D013249:Sternum