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Renal angiomyolipoma is a uncommon benign tumor of the kidney, which is composed of mixture of adipose tissue, smooth muscle, and blood vessels. Its clinical and radiographic features are similar with renal cell carcinoma, and its preoperative diagnosis had been difficult. But recently it can be easily diagnosed preoperatively by several diagnostic modalities such as nephrotomography, ultrasonography and computed tomography. It is more common in women than man left kidney then right, and in age over 40 by Price and Mostofi. Herein we present a case of right renal angiomyolipoma without tuberous sclerosis in 35 year old male, which has been preoperatively diagnosed with intravenous pyelography, ultrasonography and computer tomography.
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