Renal cell carcinomas tend to present very late, unless frank hematuria begins. The fact that the kidney is a retroperitoneal organ allows lesions to take their time and grow into much large masses before becoming clinically evident. In our center. In annual screening in the last year, we detected three cases of renal cell carcinoma with lesions measuring < 3cm in size in clinically occult patients. In this case, according to CT findings, there is no evidence of locoregional spread which favors resection and possible favorable outcome.