title: Living-donor parathyroid allotransplantation for therapy-refractory postsurgical persistent hypoparathyroidism in a nontransplant recipient - three year results: a case report.
abstract: BACKGROUND
  Therapy-refractory persistent hypoparathyroidism after extensive neck surgery is a rare but severe complication. Parathyroid allotransplantation may represent a definitive treatment option.
  
  
  METHODS
  A 32-year old female was referred to our hospital with intractable persistent hypocalcemia after neck surgery for papillary thyroid cancer. Despite optimal medical treatment including calcium and vitamin D supplementation and even hormonal replacement therapy hypocalcemic symptoms failed to improve. The quality of life was considered very low. In light of the unsuccessful medical therapy and the young age of the patient parathyroid allotransplantation seemed an attractive treatment option to restore normal calcium homeostasis despite of the need for immunosuppressive therapy after the procedure. Therefore, we performed living-donor allotransplantation of two healthy parathyroid glands to the recipient's left forearm. The surgical intervention was successful. Neither the donor nor the recipient showed any complications. In the postoperative course clinical symptoms of hypocalcemia significantly improved whereas serum calcium and parathyroid hormone (PTH) levels progressively increased into the normal range. Former intense replacement therapy could be discontinued completely in a stepwise fashion. To date, nearly three years after transplantation, the patient remains asymptomatic with normal serum levels of calcium and PTH.
  
  
  CONCLUSIONS
  Successful living-donor parathyroid allotransplantation for postsurgical hypoparathyroidism represents an innovative therapeutic strategy that could provide the definitive treatment in those patients in which the disease is therapy-refractory. The procedure can be justified even in nontransplant recipients. Retrieval of parathyroid glands from healthy donors is feasible and safe.
authors.affiliation: Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, D-93053, Regensburg, Germany. Ayman.Agha@ukr.de.
authors.forename: Ayman
authors.initials: A
authors.lastname: Agha
authors.affiliation: Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, D-93053, Regensburg, Germany.
authors.forename: Marcus Nils
authors.initials: MN
authors.lastname: Scherer
authors.affiliation: Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, D-93053, Regensburg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Moser
authors.affiliation: Medical Clinic and Policlinic III, University Hospital Giessen, D-35392, Giessen, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Karrasch
authors.affiliation: Department of Internal Medicine I, University Hospital Regensburg, D-93053, Regensburg, Germany.
authors.forename: Christiane
authors.initials: C
authors.lastname: Girlich
authors.affiliation: Department of Pathology, University Hospital Regensburg, D-93053, Regensburg, Germany.
authors.forename: Fabian
authors.initials: F
authors.lastname: Eder
authors.affiliation: Department of Radiology, University Hospital Regensburg, D-93053, Regensburg, Germany.
authors.forename: Ernst-Michael
authors.initials: EM
authors.lastname: Jung
authors.affiliation: Department of Surgery, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, D-93053, Regensburg, Germany.
authors.forename: Hans Juergen
authors.initials: HJ
authors.lastname: Schlitt
authors.affiliation: Medical Clinic and Policlinic III, University Hospital Giessen, D-35392, Giessen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Schaeffler
mesh_terms: D000328:Adult; D064591:Allografts; D002277:Carcinoma / Q000601:surgery*; D002291:Carcinoma, Papillary; D005260:Female; D006801:Humans; D006996:Hypocalcemia / Q000209:etiology / Q000628:therapy; D007011:Hypoparathyroidism / Q000209:etiology* / Q000628:therapy*; D019520:Living Donors; D037981:Neck Dissection / Q000009:adverse effects*; D010280:Parathyroid Glands / Q000637:transplantation*; D010281:Parathyroid Hormone / Q000097:blood; D011183:Postoperative Complications / Q000628:therapy; D011788:Quality of Life; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000601:surgery*; D013965:Thyroidectomy / Q000009:adverse effects*
chemical_list: D010281:Parathyroid Hormone
keywords: Hypocalcemia; Hypoparathyroidism; Immunosuppression; Living-donor parathyroid allotransplantation