Figure 6.

Varying degrees of fibrosis of the muscularis propria in coronavirus disease 2019‐associated ischaemic enterocolitis. A, Focal fibrosis of the external muscularis propria (bracket) [haematoxylin and eosin (H&E)]. B, Replacement of the external muscularis propria by an exuberant fibroblastic reaction (bracket) (H&E). C, The muscularis propria is replaced by dense fibrosis. D, A trichrome stain highlights the replacement of the external layer of the muscular wall by dense fibrosis, with residual bundles of smooth muscle in the internal layer of the muscularis propria (arrows). [Colour figure can be viewed at wileyonlinelibrary.com]