title: Neck emergency due to parathyroid adenoma bleeding: a case report.
abstract: BACKGROUND
  The spontaneous rupture of a parathyroid adenoma accompanied by extracapsular hemorrhage is a rare, potentially fatal, condition and is a cervicomediastinal surgical emergency.
  
  
  METHODS
  This report describes an atypical two-step spontaneous rupture of an asymptomatic parathyroid adenoma in a 56-year-old Caucasian woman who presented with a painful mass in the right side of her neck.
  
  
  CONCLUSIONS
  Based on this case report and similar cases reported in the medical literature, a diagnosis of extracapsular parathyroid hemorrhage should be considered when a non-traumatic sudden neck swelling coexists with hypercalcemia and regional ecchymosis.
authors.forename: Isabella
authors.initials: I
authors.lastname: Merante-Boschin
authors.forename: Matteo
authors.initials: M
authors.lastname: Fassan
authors.forename: Maria Rosa
authors.initials: MR
authors.lastname: Pelizzo
authors.forename: Eric Casal
authors.initials: EC
authors.lastname: Ide
authors.forename: Massimo
authors.initials: M
authors.lastname: Rugge