Histology of the healing process after total colectomy, mucosal proctectomy and ileo-anostomy.

Total colectomy, mucosal proctectomy and ileo-anostomy were performed on 10 dogs to observe the healing process of the space between the rectal muscle cuff and the pulled through ileum. Adhesion was complete in six cases. The ileal and rectal muscle layers were well preserved, but two weeks after the surgery the healing was not completed. One month after the operation, there was little scar formation between the rectal muscle cuff and the ileum, in the absence of infection. If there was infection between the ileum and the rectal muscle cuff, abscess and scar formation was seen even one month after the operation. This operation is thought to be rational from a histological viewpoint and the most important factor is the prevention of infection in the space between the ileum and rectal muscle cuff.