Introduction
“Botryoid”, first described in 19811, is a
descriptive term used for tumors with a lobular grape-like appearance
growing in a polypoid fashion into the renal pelvis and was found in
gross and histological examinations in 10% of patients with Wilms
tumor2. Botryoid growth pattern (BGP) in bilateral
Wilms tumor (BWT) is extremely rare, and the surgical management is
challenging because of the absolute need to preserve renal parenchyma
and to avoid a tumoral spillage.