ABSTRACT
The cancer of the kidney accounts for 3% of all adult malignant tumors and have an increased incidence. This retrospective study, reports 139 cases colliged in the Ibn Sina hospital, between 1990 and 1999. It concerns 68 men, 72 women [range 19-88 years]. Most of patients [79.8%] have between 40 and 70 years. The diagnosis was assessed by the histological examination about surgical specimens in 132 cases, renal biopsy in six cases and renal cytopunction in one case. Clear cell carcinoma was more frequent [72%] in 100 cases, metastasis [20.3%] in 28 cases, tubulo-papillary tumors, sarcomatoide carcinoma and wilms tumor [2,1% each other] 3 cases, Bellini carcinoma and clear sarcoma [0,7% each other] one case. Furhman grade as a prognosis factor used in 103 cases that 65% had a high grade [III, IV]. The diagnosis is based by microscopic gross in all of case except in few cases, the immunohistochemistry study was necessary. We insist on the central role of pathologist in prognosis of cancer kidney in adults