Table 2 Patient diagnostic evaluation data (n = 28)
Characteristic | No. of patients (%) |
|---|---|
Endoscopy and histologic features | |
Type of endoscopy | |
Colonoscopy | 22 (79) |
Flexible sigmoidoscopy | 6 (21) |
Endoscopic findings on initial evaluation | |
Ulceration | 8 (29) |
Nonulcerative inflammation | 13 (46) |
Normal | 7 (25) |
Endoscopic distribution | |
Extensive | 14 (50) |
Left colon only | 5 (18) |
Isolated small bowel | 2 (7) |
Histological inflammation on initial evaluation | |
Active features | 28 (100) |
Chronic features | 14 (50) |
Microscopic | 10 (36) |
Median no. of endoscopic procedures (IQR) | 2 (1–7) |
Diagnostic laboratory studies | |
Mean duration of laboratory follow-up, months (SD) | 3 (4) |
Positive fecal lactoferrin at onset of diarrheaa | 23 (100) |
Positive fecal lactoferrin after vedolizumab therapyb | 11 (79) |
Mean fecal calprotectin value at onset of diarrhea μg/g (SD)c | 329 (276) |
Mean fecal calprotectin value at follow-up μg/g (SD)d | 218 (262) |