Table 3.
Histological findings of 25 specimens from 19 patients with acute coronavirus disease 2019 (COVID‐19)‐associated ischaemic enterocolitis
| Histological features (N = 25) | n (%) |
|---|---|
| Depth of necrosis | |
| Mucosa/submucosa | 11 (44) |
| Mural/transmural | 14 (56) |
| Distribution of necrosis | |
| Focal | 1 (4) |
| Multifocal/patchy | 13 (52) |
| Diffuse | 11 (44) |
| Histological evidence of pneumatosis | |
| Not present | 10 (40) |
| Present | 15 (60) |
| Quantity of small vessel fibrin thrombi | |
| None | 1 (4) |
| Rare/few | 8 (32) |
| Numerous | 16 (64) |
| Location of fibrin thrombi | |
| Mucosa | 19 (76) |
| Submucosa | 23 (92) |
| Muscularis propria | 2 (8) |
| Subserosa | 1 (4) |
| Small vessel fibrinous degeneration with perivascular neutrophils | |
| None | 2 (8) |
| Few vessels | 12 (48) |
| Numerous vessels | 11 (44) |
| Fibrin strands in submucosal vessels | |
| None | 11 (44) |
| Few vessels | 12 (48) |
| Numerous vessels | 2 (8) |