Mediastinal ectopic parathyroid adenoma: report of two cases successfully treated by VATS approach.

Ectopic parathyroid adenomas are the cause of approximately one in four cases of primary hyperparathyroidism (pHPT). Most ectopic parathyroid adenomas are located adjacent to the upper thymus gland and can be resected with a collar incision. In rare cases, however, adenomas located in the chest require a transsternalor transthoracic approach. Due to the high rate of morbidity with a sternotomy or thoracotomy, minimally invasive methods such as video-assisted thoracoscopic surgery (VATS) or video-assisted mediastinoscopic surgery (VAMS) are becoming increasingly popular. We present two cases with primary hyperparathyroidism due to mediastinal ectopic parathyroid adenoma that were successfully treated by VATS approach.