Biopsies of large bowel in regional enteritis.

¥N patients with Crohn's disease of the small .¦¦ intestine the large bowel may be involved in several ways. Large-bowel involvement in continuity with terminal ileitis occurred in 22% of patients with Crohn's disease reported by Saltzstein and Rosenberg.1 The area of large bowel affected was usually the cecum and ascending colon, and there were no patients with diffuse or left-sided colonic involvement. The colon may be involved by fistula formation from