Robot-assisted complete thymectomy for mediastinal ectopic parathyroid adenomas in primary hyperparathyroidism

Area of Science:

• Endocrinology
• Thoracic Surgery
• Minimally Invasive Surgery

Background:

• Ectopic parathyroid adenomas in the lower mediastinum are rare, often requiring invasive sternotomy or thoracotomy.
• Video-assisted thoracoscopic surgery (VATS) offers a less invasive alternative to traditional open procedures.
• Robot-assisted thoracoscopic surgery represents a further advancement in minimally invasive techniques for mediastinal masses.

Purpose of the Study:

• To evaluate the efficacy and safety of robot-assisted complete thymectomy for primary hyperparathyroidism caused by mediastinal ectopic parathyroid adenomas.
• To assess the impact of this approach on parathyroid hormone (PTH) and calcium levels.
• To document surgical outcomes, including complications and recovery.

Main Methods:

• A case series of five consecutive patients undergoing robotic-assisted mediastinal parathyroidectomy by a single surgeon.
• Pre-operative imaging included Technetium 99-sestimibi scans and CT.
• Intraoperative parathyroid hormone (iOPTH) levels were monitored to confirm successful adenoma resection.

Main Results:

• Successful removal of ectopic parathyroid adenomas in all five patients.
• Significant decrease in iOPTH levels (~50%) within 10 minutes of adenoma removal.
• All patients achieved normal postoperative calcium levels with no intraoperative or postoperative complications, including no recurrent laryngeal nerve injuries.

Conclusions:

• Robot-assisted complete thymectomy is a safe and effective treatment for mediastinal ectopic parathyroid adenomas causing primary hyperparathyroidism.
• This technique provides excellent visualization and leads to successful biochemical correction of hyperparathyroidism.
• The minimally invasive nature of robot-assisted surgery results in favorable patient outcomes without morbidity or mortality.