Imagine a garden hose that has been cut in half and then folded open. Then that hose is stuck out through the abdomen with a plastic bag to catch the material that continues to flow out of one opening.
Last week, my doctor cut cut around the segment of colon, pulled it out and sewed it back together to allow waste materials to resume flowing through the original plumbing.
Instead of closing the wound surgeons allow wounds like this one to fill in and close naturally. I'm told it may take about three weeks or so to fully close.