The authors present survey of endocrine-active adrenal tumors and the role of imaging methods in the diagnosis. Having briefly dealt with anatomy and physiology of adrenals the authors describe most important clinical syndromes associated with endocrine-active adrenal tumors: hypercortisolism (Cushing syndrome), hyperaldosteronism, pheochromocytoma and incidentaloma. The contribution of individual imaging methods is then described. Their position in the diagnosis of extra-adrenal causes of hormonal adrenal functions is briefly mentioned. Their possibilities in endocrine-active adrenal tumors are analyzed in more detail. Ultrasonography, CT and MR are used most frequently, and CT examination has been the most frequent modality in this country. The possibilities of functional scintigraphy of adrenals, angiography and intervention radiological methods are also outlined. In the diagnosis of endocrine-active adrenal tumors the imaging methods always follow after clinical and laboratory examination of the patients.

        Key words: adrenal gland – tumor – hypercortisolism – hyperaldosteronism – pheochromocytoma – incidentaloma – ultrasonography – computed tomography – magnetic resonance – scintigraphy – angiography