OSSIFYING RENAL TUMOR OF INFANCY

Ossifying renal tumor of infancy is a rare but distinctive tumor that presents as a mass in the pelvicaliceal system. It is usually suspecte d to be a calculus until surgical exploration reveals dense tumor atta chment to the renal parenchyma. The histogenesis of this lesion has no t been established. We present a case of this unusual neoplasm. A rena l sparing procedure was performed on this biologically benign tumor. F ollowup after 20 months showed no evidence of recurrence.