Delayed enterocutaneous fistula formation secondary to an inverted non-absorbable suture post midline laparotomy closure

INTRODUCTION: Enterocutaneous fistula is a well recognised complication of intra-abdominal surgery. Postoperatively, it may occur due to a small bowel injury or an anastomotic leak and usually presents within days or weeks after surgery. METHODS: We present a case report. Information was obtained through a retrospective review of the notes, clinic letters, images and the histology report. RESULTS: We present a case of a patient who developed an enterocutaneous fistula 34 years after panproctocolectomy for ulcerative colitis. Imaging was consistent with an enterocutaneous fistula arising from mid-small bowel. A laparotomy and small bowel resection was performed. The enterocutaneous fistula occurred due to an inverted non-absorbable suture post midline laparotomy closure. CONCLUSION: Suture-related enterocutaneous fistula can be a rare delayed complication of a midline laparotomy closure when a knot is inverted intra-peritoneally. Consideration should be given to either leaving a knot in the subcutaneous fat tissue or feeding it between the rectus sheath and the suture bites.