Not every UC patient has a 10-inch rectum! I was surprised to hear from my gastro a few months ago that the colon of UCers tends to shrink lengthwise over time. I knew about
the narrowing issue, but did not realize that the disease process also can affect overall length of the organ. Sort of better NOT to know some of these things ... (???) Well, I really can't be bothered worrying about
THAT, too! / Old Hat (nearly 30 yrs with left-sided UC; currently on 3 X 3 Colazal daily for July flare in descending colon, which is responding)