title: Unusual presentations of enlarged parathyroid cysts: two case reports.
abstract: BACKGROUND
  Parathyroid cysts are infrequently encountered and have a variable presentation pattern depending on their size, location and secreting character.
  
  
  METHODS
  We report two cases of parathyroid cysts characterized by their uncommon clinical presentation.
  
  
  RESULTS
  In the first case the patient presented with a large cervical cystic mass without hypercalcemia, while in the second case, the patient experienced a hypercalcemic crisis associated with acute renal failure. The variable pattern of clinical manifestations is discussed.
  
  
  CONCLUSIONS
  Parathyroid cysts are a rare entity. Surgical resection is the key to therapy when hyperparathyroidism or local compression are identified.
authors.affiliation: a Surgery and Abdominal Transplantation Division , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Aurore
authors.initials: A
authors.lastname: Pire
authors.affiliation: a Surgery and Abdominal Transplantation Division , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Antoine
authors.initials: A
authors.lastname: Buemi
authors.affiliation: b Department of Pathology , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Camboni
authors.affiliation: a Surgery and Abdominal Transplantation Division , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Tom
authors.initials: T
authors.lastname: Darius
authors.affiliation: a Surgery and Abdominal Transplantation Division , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Luc
authors.initials: L
authors.lastname: De Pauw
authors.affiliation: a Surgery and Abdominal Transplantation Division , Saint-Luc's University Hospital, Université Catholique de Louvain , Brussels , Belgium.
authors.forename: Michel
authors.initials: M
authors.lastname: Mourad
mesh_terms: D003560:Cysts / Q000473:pathology* / Q000601:surgery; D006801:Humans; D006934:Hypercalcemia / Q000150:complications; D010279:Parathyroid Diseases / Q000473:pathology* / Q000601:surgery
keywords: Parathyroid; cysts; presentation