Multilocular cystic renal cell carcinoma in a child.

Multilocular cystic renal cell carcinoma is an extremely rare condition in adults with no previous case reports in the pediatric age group. The authors report on an 8-year-old girl who underwent nephrectomy for a right-sided renal cystic disease because of extensive involvement of the kidney. Subsequent histopathologic examination findings showed presence of renal cell carcinoma in all the cysts. Awareness of this malignancy in a child is extremely important in the background of recent reports advocating conservative wait and watch management in unilateral renal cystic disease, which has similar clinical and imaging findings.