Teenager who had received radiation therapy for Wilms tumor Pediatric Imaging Gastrointestinal August 19, 2025April 26, 2025 AP image from an upper GI and small bowel follow through exam shows mild thickening of the small bowel folds throughout the jejunum (stack of coins sign). The diagnosis was mild radiation induced enteritis. Related Published August 19, 2025April 26, 2025