Fig. 1

Imaging examination in fetal period and intraoperative finding for Case 1. a Prenatal US examination in 26-week gestation revealed the fetal intestine was dilated obviously as the inner diameter to 12.7 mm. b Sagittal MRI scanning in 34-week gestation showed the ascites had been increasing constantly with 32 mm in depth. c, d Gangrenous appendicitis with perforation was near the tip as well as a perforated lesion at the terminal ileum. We performed a limited ileocaecal resection with ileo-ascending colon anastomosis (white arrow: the gangrenous appendix, pink arrow: terminal ileum, yellow arrow: ascending colon)