Fig. 2

Ultrasound images of the child at 10 h after birth. a The cystic mass is connected to the stomach through the pylorus (white arrow) and upper duodenum (black arrow). The cystic mass and gas-like echoes are seen in the upper duodenum. b A giant cystic mass, approximately 7.3 × 5.1 × 3.9 cm in size, is located in the right abdominal cavity and has ground-glass echogenicity. Gas-like echoes also appear in the cystic mass. c The colonic bowel is compressed to the left side of the abdomen. No obvious abnormalities in the colon and rectum are seen