Preoperative thoracic muscle mass predicts bone density change after parathyroidectomy in primary hyperparathyroidism.

CONTEXT Predicting bone mineral density (BMD) gain after parathyroidectomy may influence individualized therapeutic approaches for treating patients with primary hyperparathyroidism (PHPT). OBJECTIVE This study aimed to assess whether skeletal muscle mass data could predict BMD change after parathyroidectomy in patients with PHPT. DESIGN This retrospective study collected data from 2012 to 2021. SETTING Severance Hospital, Seoul, Korea. PATIENTS A total of 130 patients (mean age, 64.7 years; 81.5% women) with PHPT who underwent parathyroidectomy were analyzed. MAIN OUTCOME MEASURE Thoracic muscle volume (T6 to T7 level) was estimated using non-contrast parathyroid single photon emission computed tomography/computed tomography (SPECT/CT) scans and an automated deep-learning-based software. The primary outcome assessed was the change in femoral neck BMD (FNBMD, %) one year after parathyroidectomy. RESULTS The median degree of FNBMD change after parathyroidectomy was +2.7% [interquartile range: -0.9 to +7.6%]. Elevated preoperative PTH level was associated with lower thoracic muscle mass (adjusted β: -8.51 cm 3 per one log-unit PTH increment, p = 0.045) after adjusting for age, sex, body mass index, and baseline FNBMD. One standard deviation decrement in thoracic muscle mass was associated with lesser FNBMD (adjusted β: -2.35%, p = 0.034) gain and lumbar spine BMD gain (adjusted β: -2.51%, p = 0.044) post-surgery after adjusting for covariates. CONCLUSIONS Lower thoracic skeletal muscle mass was associated with elevated preoperative PTH levels in patients with PHPT. Lower skeletal muscle mass was associated with lesser BMD gain after parathyroidectomy, independent of age, sex, BMI, preoperative BMD, and PTH level.

• Publication year

  2022

• Venue

  Journal of Clinical Endocrinology and Metabolism

• Publication date

  2022-02-11

• Fields of study

  Medicine

• Identifiers
  DOI 10.1210/clinem/dgac083PMID 35148405
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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