crohn's colitis is CD of the colon (col=colon, itis=inflammation).
Differences that can be seen via colonoscopy are;
with CD the disease can affect the many layers of the intestinal lining (often the reason leading to fistulas which UCers are not prone to getting) with UC the inflammation remains on the surface of the lining only.
with CD there are skipped patterns of inflammation (healthy tissues in between diseased tissues) with UC the entire area will be inflamed.
The same meds are used to treat UC as used to treat crohn's colitis.
Crohn's can affect the entire GI tract (anus to mouth), where as UC is limted to the colon/rectom only...both UCers and CDers can have issues with extraintestinal manifestations, issues with skin, eyes, joints, bones.
If your GI isn't able to tell visually via colonoscopy, a good GI will order stool and blood tests and tests to check out the small intestines and do a biopsy as well to try and help determine which form of IBD a patient is dealing with.
A sigmoidoscopy doesn't go up near as far as a colonsocopy so you should request a colonoscopy, which a good GI will do in the first place to try and DX a patient from either having CD or UC.
My bum is broken....there's a big crack down the middle of it! LOL :)
Post Edited (pb4) : 10/8/2008 1:43:27 PM (GMT-6)