Fig. 3

Duodenal histology from a coeliac patient on a gluten-containing diet showing a homogenous Marsh-Oberhuber 3c lesion (a). In b, the duodenal histology from the same patient following a gluten-free diet is reported showing different grades of damage (3c on the left side of the panel and 3a on the right side). Using the Marsh-Oberhuber classification the two biopsies will be classified as 3c although presenting a different pattern