What is a potential complication of Cushing's syndrome?

Study for the UWorld Endocrine Test. Dive into flashcards and multiple choice items with explanations and hints. Prepare yourself thoroughly!

In Cushing's syndrome, one of the hallmark effects is prolonged exposure to elevated levels of cortisol, which is a glucocorticoid produced by the adrenal glands. High cortisol levels can lead to various metabolic changes in the body, and one significant complication that arises from this condition is osteoporosis.

Cortisol has a catabolic effect on bone, leading to decreased bone density. It interferes with the activity of osteoblasts (the cells responsible for bone formation) while enhancing osteoclast activity (the cells responsible for bone resorption). This imbalance contributes to increased bone turnover and eventually a loss of bone density, predisposing individuals to fractures and osteoporosis.

While hypothalamic-pituitary-adrenal axis dysregulation can lead to hypoadrenalism under certain circumstances (such as after withdrawal from long-term corticosteroid therapy), it is not a direct or common complication of Cushing's syndrome itself. Hypoglycemia is typically not seen in Cushing's syndrome; rather, patients often experience hyperglycemia due to insulin resistance. Hyperkalemia is also unlikely, as Cushing's syndrome is more associated with hypernatremia and hypokalemia due to cortisol’s effects on mineralocorticoid receptors. Thus, osteoporosis stands out

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