[A case of multilocular cystic nephroma]

Multilocular cystic nephroma is an uncommon and usually benign nephroblastic neoplasm. Considering its therapeutic indication, it is important to distinguish this lesion from malignant renal masses. The lesion usually shows a well-encapsulated, multilocular cystic mass on US and CT. Occasionally, imaging studies are not useful for preoperative diagnosis, however, surgical biopsy should be considered for correct pathological diagnosis.