Table 1.

Architectural lesions associated with idiopathic inflammatory bowel disease (IBD) in symptomatic and asymptomatic cats

Lesions of enteritis	Symptomatic (N = 23)			Asymptomatic (N = 16)
	Score of Lesion			Score of Lesion
	0	1–2	3	0	1–2	3
Submucosal edema, n (%)	7 (30.4%)	14 (60.9%)	2 (8.7%)	6 (37.5%)	9 (56.25%)	1 (6.25%)
Lamina propria fibrosis, n (%)	6 (26.1%)	13 (56.5%)	4 (17.4%)	1 (6.25%)	12 (75%)	3 (18.75%)
Epithelial hyperplasia, n (%)	11 (47.8%)	10 (43.5%)	2 (8.7%)	7 (43.75%)	9 (56.25%)	0 (0%)
Villous hyperplasia, n (%)	19 (82.6%)	2 (8.7%)	2 (8.7%)	14 (87.5%)	2 (12.5%)	0 (0%)
Villous atrophy, n (%)	8 (34.8%)	8 (34.8%)	7 (30.4%)	3 (18.75%)	11 (68.75%)	2 (12.5%)
Microerosions, n (%)	5 (21.7%)	9 (39.1%)	9 (39.1%)	5 (31.25%)	9 (56.25%)	2 (12.5%)
Crypt hyperplasia, n (%)	7 (30.4%)	9 (39.1%)	7 (30.4%)	10 (62.5%)	6 (37.5%)	0 (0%)
Dysplasia, n (%)	19 (82.6%)	4 (17.4%)	0 (0%)	16 (100%)	0 (0%)	0 (0%)

Score: Score 0: normal; 1: mild, 2: mild to moderate; 3: moderate; 4: severe. The highest among the separate scores assigned to any section of the intestine for each lesion was considered as the overall score for that lesion. Scores 1 and 2 are presented together.

Symptomatic: cats with histopathological findings of IBD and clinical signs.

Asymptomatic: cats with histopathological findings of IBD without clinical signs.