Minimally invasive resection for mediastinal ectopic parathyroid glands

Area of Science:

• Endocrinology
• Thoracic Surgery
• Surgical Oncology

Background:

• Ectopic mediastinal parathyroid glands cause hypercalcemia due to hyperparathyroidism.
• Surgical management of these glands presents unique challenges.

Purpose of the Study:

• To review the experience with ectopic mediastinal parathyroidectomy.
• To compare outcomes of minimally invasive versus open surgical approaches.

Main Methods:

• Retrospective review of 33 patients undergoing mediastinal parathyroidectomy (1980-2010).
• Analysis of surgical approaches (minimally invasive vs. open), localization techniques (Technetium-sestamibi scan), and intraoperative parathyroid hormone monitoring.
• Histopathological analysis of resected tissues.

Main Results:

• Primary hyperparathyroidism was the most common diagnosis (97%).
• Minimally invasive surgery (55%) and open surgery (45%) were employed, with video-assisted thoracoscopy and median sternotomy being common approaches, respectively.
• Ectopic glands were found intrathymically (45%), in the aortopulmonary window (21%), and other intrathoracic locations (33%).
• Adenomas were most frequent (64%), followed by hyperplasia (27%) and carcinoma (9%).
• No early mortality; morbidity was 24% (hypocalcemia 12%).
• Minimally invasive surgery group had a significantly shorter hospital stay (2 vs. 6 days; p < 0.001).

Conclusions:

• Minimally invasive mediastinal parathyroidectomy demonstrates comparable mortality and morbidity to open surgery.
• The significantly shorter hospital stay makes minimally invasive surgery a favorable option for treating ectopic mediastinal parathyroid glands.