Spontaneous remission of Cushing's syndrome in a patient with an adrenal adenoma.

A 23-yr-old male student presented with clinical and biochemical evidence of Cushing's syndrome. One month later, his elevated plasma and urinary adrenal steroids had returned to normal. At surgery, an adrenal adenoma was removed from his right side. We postulate that he either underwent a temporary spontaneous remission of his disease without treatment, prior to surgery, or that his adenoma secreted glucocorticoids in a cyclical fashion.