Adrenal incidentaloma is an incidentally detected formation on examination of another cause such as visualization of the adrenal glands. From 1996 till December 1999 in the Endocrinological Institute in Lubochňa 60 patients with adrenal incidentaloma were examined. In 75 % afunctional tumours were involved. In 16.6 % (10 patients) the authors recorded an initial impairment of cortisol secretion, in 3.2 % (2 patients) impaired aldosterone secretion, similarly in 3.2 % (2 patients) a pheochromocytoma and in one patient (1.6 %) impaired secretion of 17-hydroxyprogesterone. Functionally active incidentalomas accounted for one quarter of the investigated group.

        Key words: Adrenal incidentaloma - Hormonal secretion - Carcinoma