Small hyperechoic nodules of the renal parenchyma

Twenty-four hyperechogenic nodules ranging from 0.5 cm to 2.5 cm in diameter were observed within the renal parenchyma in 22 patients. Eighteen patients did not complain of renal symptoms, one had microhematuria, one renal colic, and two pain in the right flank. Because of the sonographic features suggesting fat-containing masses, these lesions were considered to be small angiomyolipomas. Two of our patients underwent surgery, which confirmed this histopathologic interpretation. Twelve patients had a sonographic follow-up, which lasted from 4 to 30 months. We did not observe any change in size or shape of the lesions.