Crohn’s Strictures: Can Baseline MRE Tell Us When Medical Therapy Is Unlikely to Work?: CGH | September 2026

What Did the Study Find?

This Japanese study evaluated 187 patients with 265 Crohn’s strictures to predict which lesions would persist despite advanced medical therapy.

• An activity score incorporated wall thickness >6 mm, ulceration and the comb sign.
• A persistence score incorporated stricture length >3 cm, prestenotic dilation >3 cm and absence of intramural edema.
• Both independently predicted failure of strictures to improve on follow-up imaging.
• Combining the two scores achieved excellent discrimination (AUC 0.90).
• Higher scores were also associated with differences in surgery-free survival.
• Importantly, this framework predicts stricture persistence, not simply inflammatory versus fibrotic composition.

Why Does It Matter?

Repeated escalation of advanced therapy may delay definitive management when a Crohn’s stricture is unlikely to improve medically. Baseline MRE could help identify these patients earlier.

GastroAGI Takeaway

MRE may evolve from characterizing a stricture to predicting its therapeutic trajectory. High-risk lesions could prompt earlier surgical discussion and closer imaging surveillance, while potentially avoiding prolonged ineffective medical escalation. However, this is not yet a validated fibrosis classifier or treatment-selection tool; prospective external validation is required.