Legend
Figure 1 CT Scan of a bilateral Wilms Tumor, the red arrow shows the Botryoid Growth pattern(A); per operative aspect of Botryoid Growth pattern (long yellow arrow) and the remaining renal parenchyma (short yellow arrow) after Nephron Sparing Surgery (B).
Figure 2 The different surgical techniques used in our patients and the remaining renal parenchyma for each kidney and histology.
Supplemental table Patients characteristics