Baseline magnetic resonance enterography features of the 97 patients with Crohn's disease and symptomatic small bowel stricture(s) (maximal or more severe characteristic across strictures, except if otherwise indicated)
| Characteristics | n, frequency (%) or median (IQR) |
|---|---|
| Maximum wall thickness (mm) | 8 (7–10) |
| Stricture(s) length (mm)* | 15 (7–25) |
| Degree of enhancement | |
| Parenchymatous phase | |
| At least mild to moderate | 94 (97) |
| Severe | 57 (59) |
| Delayed phase† | |
| At least mild to moderate | 91 (98) |
| Severe | 53 (57) |
| Pattern of enhancement | |
| Parenchymatous phase (90 s after gadolinium injection) | |
| Homogeneous (>70%) | 46 (47) |
| Layered (>70%) | 52 (54) |
| Mixed pattern | 10 (10) |
| Delayed phase (8 min after gadolinium injection) | |
| Homogeneous | 58 (62) |
| Layered | 33 (35) |
| Mixed pattern | 7 (8) |
| T2 wall hypersignal | 61 (63) |
| Deep ulceration | 26 (27) |
| Inflammatory change of mesenteric fat | |
| Blurred wall at least | 36 (37) |
| Mass or phlegmon without abscess | 4 (4) |
| Luminal diameter in the segment proximal to the narrowing (mm) | 25 (18–29) |
| Luminal diameter in the most narrowed segment (mm) | 2 (1–3) |
| Comb sign‡ | 64 (66) |
| Fistula | |
| Blind | 17 (18) |
| Internal | 7 (7) |
| Cutaneous | 0 (0) |
| Abscess | 0 |
| Fibro-fatty proliferation | 59 (61) |
| Lymph node§ | |
| Size >3 mm | 58 (60) |
| Enhancement | 54 (56) |
*Sum of all strictures.
†n=93.
‡Hypervascular appearance of the mesentery.
§Maximum of perivascular and peri-intestinal lymph node.