The single-layer continuous polypropylene colon anastomosis. A prospective assessment using water-soluble contrast enemas.

Fifty consecutive unselected patients with anastomoses to the left side of the colon were studied. Each patient had an anastomosis constructed with a single layer of continuous 4-0 polypropylene. On the seventh postoperative day, or sooner, a water-soluble contrast enema was obtained to evaluate the integrity of the anastomosis. Two patients developed radiographic and clinical evidence of anastomotic leakage, and one patient developed a late pelvic abscess and colocutaneous fistula. The documented leak rate of 6 percent attests to the safety of this method of colonic anastomosis.