Does renal function improve after parathyroidectomy in primary hyperparathyroidism?

Area of Science:

• Endocrinology
• Nephrology
• Surgical Oncology

Background:

• Primary hyperparathyroidism (PHPT) is a common endocrine disorder characterized by elevated calcium and parathyroid hormone levels.
• Decreased glomerular filtration rate is often a criterion for parathyroidectomy (PTX) in asymptomatic PHPT, but its impact on renal function post-surgery is debated.

Purpose of the Study:

• To analyze the clinical, laboratory, and histological features of PHPT patients undergoing PTX.
• To evaluate the evolution of renal function following PTX in patients with PHPT.

Main Methods:

• A retrospective study of 297 PHPT patients who underwent PTX between 1998 and 2016.
• Laboratory parameters, including serum creatinine, were assessed at baseline, one week, and one year post-PTX.

Main Results:

• Most PHPT patients (65.3%) were asymptomatic; common indications for PTX included hypercalcemia and nephrolithiasis.
• Parathyroidectomy led to normalization of PHPT-related parameters but a significant increase in serum creatinine levels persisted one year post-surgery.
• Renal function impairment was significant in patients with an initial glomerular filtration rate >60ml/min.

Conclusions:

• Surgery for PHPT, even in asymptomatic individuals, can result in persistent renal function impairment.
• SPECT-MIBI demonstrated high sensitivity for localizing parathyroid adenomas, the primary cause of PHPT.
• Post-parathyroidectomy renal function requires careful monitoring, particularly in patients with pre-existing normal or mildly impaired renal function.