Asymptomatic infantile cystic nephroma: a diagnostic dilemma.

Cystic nephroma, also called multilocular cystic nephroma, is a relatively rare, nongenetic, benign, unilateral, renal multicystic lesion. The non-specific clinical findings and the poor contribution of imaging examinations make the preoperative diagnostic dilemma from other cystic renal neoplasia; thus nephrectomy seems to be the most preferable treatment. We report a case of cystic nephroma in 11 months old male child presented with asymptomatic lump in abdomen. After a series of examinations including abdominal ultrasound, intravenous pylography and computed tomography, he underwent radical nephrectomy and diagnosis is confirmed on histopathology.