Introduction: The Malone appendicostomy is a continent channel used for antegrade enemas. It requires daily cannulation and is susceptible to stenosis. We use an indwelling low-profile balloon button tube inserted through the appendix into the cecum for antegrade enemas. We hypothesized that this method is effective at managing constipation or fecal incontinence and is associated with a low rate of stenosis.
Methods: Children who underwent laparoscopic appendicostomy balloon button placement at our institution from January 2011 to April 2017 were identified. The primary outcome was success in managing constipation or fecal continence as measured by the Malone continence scale. Postoperative complications were analyzed.
Results: Thirty-six children underwent the procedure, 35 of which met the inclusion criteria. Thirty-one patients (88.5%) underwent the operation for idiopathic constipation, 3 patients (8.6%) for anorectal malformation, and 1 patient (2.9%) for hypermobility. Rate of open conversion was 3%. A full response was obtained in 24 patients (68.6%), partial response in 9 patients (25.7%), and 2 patients failed (5.7%). One patient developed an internal hernia requiring laparotomy and later developed mucosal prolapse. One patient developed a stricture noted at button change. Seven patients (20%) underwent reversal of their appendicostomy tube: 5 due to return of normal bowel function and 2 due to discomfort with flushes.
Conclusion: A laparoscopic appendicostomy with a balloon button tube is an effective means of addressing chronic constipation or fecal incontinence. The stenosis rate associated with tube appendicostomy may be lower than those reported for Malone antegrade continence enema procedures.
Keywords: MACE procedure; antegrade enema; laparoscopic appendicostomy; pediatric colorectal surgery.