Serious predominantly diastolic treatment-resistant hypertension with unstable blood pressure values draws first contact physician’s attention to a possibility of pheochromocytoma, although in some periods of disease blood pressure values of a patient can be normal or only slightly elevated. Clinical picture is sometimes atypical, can be overlooked or lead to a wrong diagnosis. The author brings forward atypical cases where pheochromocytoma emulates different disease or diseases with clinical pictures similar to that of pheochromocytoma.

        Key words: Diastolic hypertension - Pheochromocytoma