Patience Green1, Jonathan Zagzag2, Dhaval Patel1, Lee S Weinstein3, William F Simonds3, Jenny Blau3, Stephen Marx3, Electron Kebebew1, Nancy Perrier2, Naris Nilubol4. 1. Endocrine Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland. 2. Department of Surgical Oncology, The University of Texas, MD Anderson Cancer Center, Houston, Texas. 3. Metabolic Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland. 4. Endocrine Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland. Electronic address: niluboln@mail.nih.gov.
Abstract
BACKGROUND: Because chronic kidney disease is an important comorbidity associated with primary hyperparathyroidism, we sought to evaluate the prevalence of chronic kidney disease and effects of parathyroidectomy on kidney function in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism. METHODS: We performed a retrospective analysis of 112 patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism who had at least 1 operation for primary hyperparathyroidism at 2 tertiary referral centers. The preoperative and postoperative estimated glomerular filtration rates were compared. The prevalence of chronic kidney disease stage 3 or worse (estimated glomerular filtration rates less than 60 mL/min/1.73m2) in this cohort was compared to the rates in the US population reported by the Centers for Disease Control and Prevention. RESULTS: The median age at the time of parathyroidectomy was 36.5 years (range: 12-76 years). A total of 99 patients had biochemical remission. The rate of chronic kidney disease stage 3 or worse in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism was greater than that observed in the US population for ages 20-39 and 40-59 (5% [n = 2/44] vs 0.39% [n = 18/4565], P = .015 and 10% [n = 4/40] vs 2.31% (n = 89/3848), P = .015, respectively). We observed improved estimated glomerular filtration rates in those with chronic kidney disease stage 3 or worse postoperatively (48 vs 57 mL/min/1.73m2, P = .047). A successful parathyroidectomy normalized all 24-hour urine calcium excretion. CONCLUSION: An indication for early parathyroidectomy should include estimated glomerular filtration rates less than 60mL/min/1.73m2 in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism.
BACKGROUND: Because chronic kidney disease is an important comorbidity associated with primary hyperparathyroidism, we sought to evaluate the prevalence of chronic kidney disease and effects of parathyroidectomy on kidney function in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism. METHODS: We performed a retrospective analysis of 112 patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism who had at least 1 operation for primary hyperparathyroidism at 2 tertiary referral centers. The preoperative and postoperative estimated glomerular filtration rates were compared. The prevalence of chronic kidney disease stage 3 or worse (estimated glomerular filtration rates less than 60 mL/min/1.73m2) in this cohort was compared to the rates in the US population reported by the Centers for Disease Control and Prevention. RESULTS: The median age at the time of parathyroidectomy was 36.5 years (range: 12-76 years). A total of 99 patients had biochemical remission. The rate of chronic kidney disease stage 3 or worse in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism was greater than that observed in the US population for ages 20-39 and 40-59 (5% [n = 2/44] vs 0.39% [n = 18/4565], P = .015 and 10% [n = 4/40] vs 2.31% (n = 89/3848), P = .015, respectively). We observed improved estimated glomerular filtration rates in those with chronic kidney disease stage 3 or worse postoperatively (48 vs 57 mL/min/1.73m2, P = .047). A successful parathyroidectomy normalized all 24-hour urine calcium excretion. CONCLUSION: An indication for early parathyroidectomy should include estimated glomerular filtration rates less than 60mL/min/1.73m2 in patients with multiple endocrine neoplasia type 1-associated primary hyperparathyroidism.
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