Review Article
Endoscopic Biopsies and Histopathological Findings in Diagnosing Chronic Gastrointestinal Disorders in Dogs and Cats
Table 1
Criteria for histopathological evaluation of the GI lining.
| Structure | Classification of lesions |
| I—epithelium | | Size of enterocytes | No lesions (0) to significantly changed (3) | Continuity of structure | No damage (0) to significantly damage (3) | Number and size of goblet cells/100 enterocytes | Normal (0) to significantly changed, large quantity of mucus (3) | Cellular infiltration | None (0) to significant infiltration (3) | II— lamina propria | | Cellular infiltration | None (0) to significant infiltration (3) | Fibrosis | None (0) to significant fibrosis (3) | Lymphangiectasia | None (0) to significant lymphangiectasia (3) | III—crypts | | Atrophy | None (0) to significant atrophy (3) | Hypertrophy—shape change | None (0) to significant hypertrophy (3) | Proliferation— hyperplasia | None (0) to significant proliferation (3) | Diversification of goblet cells | None (0) to significant diversification (3) | Presence of inflammatory cells | None (0) to significant infiltration (3) | IV—villi | | Structure (length, width, and shape) | Normal (0) to significant change in structure (3) |
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