Which procedure involves making a connection between the colon and the anal canal?

The procedure that involves making a connection between the colon and the anal canal is known as coloanal anastomosis. This surgical technique is performed after the removal of the rectum or a segment of the colon, allowing for direct continuity between the colon and the anal canal. The primary goal of this procedure is to maintain bowel function and allow for normal evacuation, preserving some degree of anatomic integrity and reducing the need for a permanent colostomy.

In this procedure, the colon is brought down and anastomosed (connected) to the anal canal, often after considerations such as cancer treatment, inflammatory bowel disease, or other conditions that necessitate resection of the rectum. This technique can help provide patients with a more natural way to have bowel movements post-surgery compared to alternatives that would require a stoma.

Other procedures mentioned do not involve creating a direct connection between the colon and the anal canal. For example, abdominoperineal resection involves removing both the anus and rectum, requiring a permanent colostomy. Sigmoid colectomy involves resection of the sigmoid colon but does not necessarily create an anal connection, as it may redirect the remaining colon to a stoma. An ileostomy involves removing the ileum