A case of phaeochromocytoma localized in the urinary bladder wall above the right ureter in a 19 years old male is described. The patient had a sustained arterial hypertension between 170/120 and 260/170, without hematuria, with regular headache and palpitations immediately after urination. Catecholamines in urine 409 and 340 micrograms per day. A partial resection of the urinary bladder wall was performed with extirpation of a tumor weighing 40 g. Size of the tumor 80 x 60 x 60 mm. The tumor contained 1.5 mg adrenaline and 0.03 mg noradrenalin per g of tissue. With postoperative blood pressure 140/90 and catecholamines in the urine normal, the patient made an uneventful recovery. The last follow-up was 10 months after operation. A short review of previously published cases is given.