. Author manuscript; available in PMC: 2014 May 1.

Published in final edited form as: Am J Gastroenterol. 2013 Apr 23;108(5):656–677. doi: 10.1038/ajg.2013.79

Table 4.

Summary of histologic classifications frequently used for celiac disease

Marsh modified (Oberhuber)	Histologic Criterion			Corazza
Marsh modified (Oberhuber)	Increased intraepithelial lymphocytes*	Crypt hyperplasia	Villous atrophy	Corazza
Type 0	No	No	No	None
Type 1	Yes	No	No	Grade A
Type 2	Yes	Yes	No	Grade A
Type 3a	Yes	Yes	Yes (partial)	Grade B1
Type 3b	Yes	Yes	Yes (subtotal)	Grade B1
Type 3c	Yes	Yes	Yes (total)	Grade B2

>40 intraepithelial lymphocytes per 100 enterocytes for Marsh modified (Oberhuber); >25 intraepithelial lymphocytes per 100 enterocytes for Corazza