Crohn's disease can be seen in:

CROHN'S DISEASE Chronic, transmural inflammatory disease of the GIT for which the cause is unknown. Can involve any pa of the alimentary tract from the mouth to the anus but most commonly affects the small intestine and colon. Involvement of both large and small intestine :55% Involvement of only small intestine :30% Involvement of only large intestine : 15% In patients with colonic disease, rectal sparing is characteristic