A mesenteric defect causing internal herniation and ischaemia of both the ascending and sigmoid colons, treated with...

Internal hernias due to mesenteric defects are a rare cause of bowel obstruction, but once present their complications are associated with a high morbidity and mortality. We present the case of a 24-year-old patient who presented to the emergency department with a 6-hour history of abdominal pain. Initial surgical review, taking into consideration the patient's clinical, biochemical and radiological findings, led to the patient being taken for immediate surgical exploration. Operative findings included a very mobile caecum and proximal ascending colon which had herniated through a defect in the small bowel mesentery, the sigmoid colon had subsequently become incarcerated by the caecum and small bowel too. Both the ascending and sigmoid colon had become ischaemic. Due to the early decision for surgical intervention, we were able to consider a number of surgical strategies, and the surgery led to a positive outcome for our patient.