MACS and Healthy Volunteers Bone Study

Plain-language summary

Adrenal adenoma is detected in 5-7% of adults and demonstrates mild autonomous cortisol secretion (MACS, dexamethasone suppression test \>1.8 mcg/dl) in 50% of individuals with adenoma. Published reports suggest a 48%-52% 2-year incidence of new vertebral fractures in patients with MACS without any significant changes in bone density measurements. A disproportionate decrease in bone quality versus density or other factors such as sarcopenia potentially contribute to development of new vertebral fractures. Determining which specific abnormalities in the steroid metabolome affect bone density, quality and strength as well as bone remodeling markers and body composition will potentially serve as a diagnostic biomarker of clinical significance.

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