From: An updated overview of spectrum of gluten-related disorders: clinical and diagnostic aspects
 | HISTOLOGICAL CRITERIA |  | MARSH MODIFIED (OBERHUBER) | CORAZZA |
---|---|---|---|---|
Increased intraepithelial lymphocytes (> 40% for Marsh, > 25% for Corazza) | Crypt hyperplasia | Villous atrophy |  |  |
No | No | No | Type 0 | None |
Yes | No | No | Type 1 | Grade A |
Yes | Yes | No | Type 2 | Â |
Yes | Yes | Yes (partial) | Type 3a | Grade B1 |
Yes | Yes | Yes (subtotal) | Type 3b | Â |
Yes | Yes | Yes (total) | Type 3c | Grade B2 |