[Surgical treatment of malignant kidney tumours (author's transl)].

In 51 patients with malignant kidney tumours, who were checked up postoperatively over a time of at least five years, the tumour nephrectomy was carried out lumbodorsally in 19 cases (37.2%) and transperitoneally in 32 cases (62.7%). There was a total survival rate of 49% after five years. When using the lumbodorsal technique of tumour nephrectomy the five year survival rate came to the total of 52.6%, in T2-tumours to 62% and in T3-tumours to 0%. By taking the transperitoneal way the five year survival rate amounted to the total of 53%, in T2-tumours to 70% and in T-3 tumours to 36%. Large tumor size and signs of tumour invasion can definitely be considered as prognostically unfavourable factors. In such cases the transperitoneal technique of tumour nephrectomy yields better chances of survival. When taking into consideration the heavy chances of understaging a tumour diagnostically and the possibility of local tumour invasion even in small tumours, it is of great importance the transperitoneal technique as the method with the best possible results.