Toddler with a large right abdominal mass

Gross pathology image of Wilms tumor
Gross pathological image after right nephroureterectomy and en bloc ileocolectomy shows a large heterogenous mass in the right kidney which was intimately adherent to the cecum (held by the forceps on the right) and the ileum (held by the forceps on the left).

The diagnosis was Wilms tumor.