Backwash ileitis extends contiguously backward from the caecum without skip regions. One source estimates it to occur in 6% of patients with UC, and these patients all have moderately to marked active caecal ulcerative colitis.
- 1. Roggeveen Mark J., Mikhail Tismenetsky and Robert Shapiro. “Ulcerative Colitis1.” Radiographics 26, no. 3 (May 2006): 947-951. doi:10.1148/rg.263055149.
- 2. Goldstein N, Dulai M. Contemporary morphologic definition of backwash ileitis in ulcerative colitis and features that distinguish it from Crohn disease. Am. J. Clin. Pathol. 2006;126 (3): 365-76. doi:10.1309/UAXMW3428PGN9HJ3 - Pubmed citation