A 14-year-old boy presented to the emergency department with a 24- h history of increasing abdominal pain. The pain localized to the right iliac fossa and a diagnosis of acute appendicitis was made. At operation, the appendix was found to be normal and the anomaly shown in the attached image was found in a loop of small bowel. What is the diagnosis?

How would you deal with this intraoperative finding? *This case is from Docplexus editorial team for educative purpose only. Source: Cases in surgery