The benign appearance of Wilms’ tumor1
Intrarenal masses in children are uncommon, with Wilms’ tumor the most prevalent of these. Two cases are presented in which the preoperative evaluation of renal masses was highly suggestive of benign disease, renal abscess, and multilocular cyst. Surgical exploration was performed in both patients, and Wilms’ tumor was found and treated successfully with radical nephrectomy. These two cases emphasize the need for surgical exploration to accurately diagnose intrarenal masses in children even when all diagnostic modalities are suggestive, but not confirmatory, of benign disease.