Parathyroid subcutaneous pre-sternal transplantation after parathyroidectomy for renal hyperparathyroidism. Long-term...

Area of Science:

• Nephrology
• Endocrinology
• Surgical Innovation

Background:

• Renal hyperparathyroidism (RHP) often necessitates total parathyroidectomy (TPT) with parathyroid transplantation (PTx).
• Subcutaneous pre-sternal transplantation (SCPTx) was investigated as an alternative to intramuscular grafting, hypothesizing comparable or superior outcomes due to parathyroid gland fatty tissue encapsulation.

Purpose of the Study:

• To evaluate the long-term function of parathyroid grafts following subcutaneous pre-sternal transplantation (SCPTx) in patients undergoing total parathyroidectomy (TPT) for renal hyperparathyroidism (RHP).

Main Methods:

• A prospective open efficacy study monitored intact parathyroid hormone (iPTH) levels in 35 RHP patients post-TPT and SCPTx.
• Follow-up ranged from 6 to 42 months, with iPTH measurements taken at multiple intervals up to 150 weeks.

Main Results:

• Preoperative iPTH averaged 1,341.52 pg/ml; levels became undetectable 24 hours post-surgery.
• Adequate graft function (iPTH > 50 pg/ml) was observed, with graft-related recurrence at 2.85% and hypoparathyroidism resolving by 100 weeks.

Conclusions:

• SCPTx is an effective method for parathyroid autotransplantation after TPT for RHP, comparable to forearm grafting but with fewer complications.
• Long-term follow-up demonstrates favorable functional results, exceeding those of previously reported surgical techniques for RHP.