[Multiple metastases of malignant cutaneous melanoma into the upper urinary tract].

The authors describe their case of the extremely rare multiple metastases of cutan melanoma malignum in the upper urinary tracts as it was treated with operations. In the case of their 17-year old patient first percutan resection of the right side of the renal pelvis-wall was done then one and half months later ureteronephrectomia was carried out on the right side because of metastases in the renal pelvis and the ureter. The primary tumour had been removed from the hairy area of the head 9 months earlier in a dermatological department. The authors have met only 14 similar cases in the international literature. In Hungary no review of any similar case has been found.