Volume 133, Issue 4, Pages 1099-1105 (October 2007) Histologic Inflammation Is a Risk Factor for Progression to Colorectal Neoplasia in Ulcerative Colitis: A Cohort Study Roopali Bansal Gupta, Noam Harpaz, Steven Itzkowitz, Sabera Hossain, Sierra Matula, Asher Kornbluth, Carol Bodian, Thomas Ullman Gastroenterology Volume 133, Issue 4, Pages 1099-1105 (October 2007) DOI: 10.1053/j.gastro.2007.08.001 Copyright © 2007 AGA Institute Terms and Conditions
Figure 1 Histologic activity index. (A) Inactive colitis with no cryptitis or crypt abscesses: HAI = 0. (B) Mildly active colitis with 1 crypt abscess (arrow): HAI = 1. (C) Moderately active colitis with cryptitis involving >50% of crypts (arrows): HAI = 2. (D) Severely active colitis with ulceration: HAI = 3. Gastroenterology 2007 133, 1099-1105DOI: (10.1053/j.gastro.2007.08.001) Copyright © 2007 AGA Institute Terms and Conditions