Adrenal vein catheterization data from 2 patients with adrenocortical adenomas causing Cushing’s syndrome are presented and the electron-microscopic features of one of the tumors are described. Based on the catheterization data both tumors produced all three classes of adrenal steroids (mineralocorticoids, glucocorticoids and sex steroids). Electron-microscopic examination of the tumor cells suggested an origin from the zona fasciculata. If one accepts the theory of a common cellular origin of adrenal tumors, then the pattern of steroidogenesis would indicate that the postulated original ‘stem’ cell retains the potential of secreting all classes of adrenocortical steroids. The clinical presentation of such tumors would thus reflect the hypersecretion of one of the steroid classes relative to the others.

Keywords:
Steroidogenesis, Adrenal adenoma, Cushing’s syndrome, Adrenal catheterization
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© 1987 S. Karger AG, Basel
1987
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