Histopathological features
| Collagenous colitis (n=96) | Lymphocytic colitis (n=80) | |
|---|---|---|
| Thickness of collagen band (μm) | ||
| Mean | 11.4 (3) | 5.5 (2.4) |
| Range | 3–10 | |
| Number of IELs/100 epithelial cells | ||
| Mean | 13.6 | 29.4 (9) |
| Range | 5–27 | |
| Overlap forms with LC/CC | 27 (28%) | 21 (26%) |
Number of cases with biopsies examined = 210.
Number of cases with confirmed diagnosis: CC = 96; LC = 80; total = 176 (83.8% of cases confirmed).
LC, lymphocytic colitis; CC, collagenous colitis; IEL, intraepithelial lymphocytes.