Unusual radiological presentation of renal cell carcinoma

elvicalyceal filling defect could be from stone blood clot or tumor (transitional cell carcinoma).1,2 It is unusual for renal cell carcinoma to present as such. Excretory urography and retrograde pyelography are essential for primary diagnosis3,4 moreover, ultrasound (US) and computerized tomography (CT) scanning can help in the differential diagnosis and to confirm and stage renal tumors.5,6 Case Report. A 59-year-old man presented with recurrent frank hematuria every 2-3 months for the past 11 months. He had mild dysuria but no renal pain. There was a history of renal stones and a right pyelolithotomy and pyeloplasty. Physical examination was normal. Urine tests revealed blood, red blood cells and white blood cells, but no bacteria or growth. The hemoglobi