title: Brown tumors developing in renal transplant recipients with persistent hyperparathyroidism: two case reports and review of literature.
abstract: BACKGROUND
  Brown tumors, evidence for severe hyperparathyroidism, are rare in end-stage renal disease, and are distinctly uncommon in patients with a functioning renal transplant.
  
  
  METHODS
  We report two cases of brown tumors developing after renal transplantation, and discuss their presentation and treatment. We review the literature.
  
  
  CONCLUSIONS
  We suggest that persistent hyperparathyroidism post-renal transplant requires aggressive intervention to avoid significant consequences.
authors.affiliation: Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York 10467, USA.
authors.forename: S
authors.initials: S
authors.lastname: Lee
authors.forename: D B
authors.initials: DB
authors.lastname: Lerer
authors.forename: H D
authors.initials: HD
authors.lastname: Dorfman
authors.forename: M
authors.initials: M
authors.lastname: Coco
mesh_terms: D001859:Bone Neoplasms / Q000150:complications* / Q000175:diagnosis; D001842:Bone and Bones / Q000473:pathology; D005260:Female; D018212:Giant Cell Tumor of Bone / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000150:complications* / Q000175:diagnosis; D007676:Kidney Failure, Chronic / Q000601:surgery; D016030:Kidney Transplantation; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis