[The problem of the prognostic significance of perforations of the kidney hollow system and its vascular system; involvement of the lymphatic system and of surrounding organs in patients with hypernephroid kidney cancers].

On the basis of 51 patients with a hypernephroid renal carcinoma the prognostic importance of the size of the tumour, of the infraction into the renal hollow system, the invasion of lymphatic and vascular system as well as of the border of the organ after tumour nephrectomy and a 5-year observation time was discussed. While the isolated infraction into the hollow system was not relevant in smaller tumours, it implies an additional prognostically negative factor in advanced tumours. In the same measure the invasion of renal capsule or perihilary tissue resulted in a prognostically negative factor. Invasion of blood or lymphatic vessels proved to be very bad prognostically and resulted in a decrease of the survival rate of about 2/3. The prognostically worst hint was the simultaneous infraction into various systems with a decrease of the survival rate of more than 3/4.