Table 3

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)

Characteristicsn, 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 moderate94 (97)
  Severe57 (59)
 Delayed phase†
  At least mild to moderate91 (98)
  Severe53 (57)
Pattern of enhancement
 Parenchymatous phase (90 s after gadolinium injection)
  Homogeneous (>70%)46 (47)
  Layered (>70%)52 (54)
  Mixed pattern10 (10)
 Delayed phase (8 min after gadolinium injection)
  Homogeneous58 (62)
  Layered33 (35)
  Mixed pattern7 (8)
T2 wall hypersignal61 (63)
Deep ulceration26 (27)
Inflammatory change of mesenteric fat
 Blurred wall at least36 (37)
 Mass or phlegmon without abscess4 (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)
 Blind17 (18)
 Internal7 (7)
 Cutaneous0 (0)
Fibro-fatty proliferation59 (61)
Lymph node§
 Size >3 mm58 (60)
 Enhancement54 (56)
  • *Sum of all strictures.

  • †n=93.

  • ‡Hypervascular appearance of the mesentery.

  • §Maximum of perivascular and peri-intestinal lymph node.