Abstract: Objective To evaluate the safety and effectiveness of surgical treatment of the patients with primary hyperparathyroidism using da Vinci Si surgical system. Methods A retrospective analysis was performed on the clinical data of 12 patients with primary hyperparathyroidism in our department who received robotic-assisted parathyroidectomy using da Vinci Si surgical system from November 2014 to December 2017. Preoperative diagnosis with precise localization of parathyroid had been done. Blood parathyroid hormone, calcium and phosphate levels were detected before and after operation. Postoperative complications such as bleeding, hoarseness and cough of drinking water were analyzed and the patients were followed up from 2 to 24 months. Results All twelve cases had successful robotic parathyroidectomy assisted with the da Vinci Si surgical system. There were no severe operative complications and no conversions to open surgery. The operation time was(58± 17.37)(38~89) min and intraoperative blood loss was(25± 4.75)(20~35) mL. Transient hypocalcemia occurred in 7 cases postoperatively and cured with calcium and vitamin D. The postoperative cosmetic result was excellent. The patients had no postoperative recurrence during the period of follow-up except 1 patient with parathyroid hyperplasia. Conclusions It showed that the surgical treatment of primary hyperparathyroidism assisted with da Vinci Si surgical system was safe and effective when the surgical indication was fully established, especially suitable for the patients with cosmetic requirements.

Key words: da Vinci Si surgical system, Primary hyperparathyroidism, Parathyroid tumor