References
1. Yoshimura N, Mukaida H, Mimura T, et al. A case of an acute cervicomediastinal hematoma secondary to the spontaneous rupture of a parathyroid adenoma. Ann Thorac Cardiovasc Surg 20 Suppl : 816-820, 2014.
2. Shinomiya H, Otsuki N, Takahara S, et al. Parathyroid adenoma causing spontaneous cervical hematoma: two case reports. BMC Res Notes 8 : 726, 2015.