Preschooler who had Wilms tumor in the left kidney treated with radiation a year ago with difficulty stooling Pediatric Imaging Gastrointestinal October 15, 2024October 11, 2024 AP image from an enema shows a fixed narrowing of the descending colon from the splenic flexure to the sigmoid colon with dilation of the colon proximal to it. The extremely dilated cecum is in the midline of the pelvis. The diagnosis was radiation induced enteritis involving the descending colon in a patient with Wilms tumor. Related Published October 15, 2024October 11, 2024