Thanks to recent technological advances enabling rapid acquisition and the acquisition ofhigh-resolution images, and given the absence of radiation, entero- MRI plays anessential role in the evaluation and monitoring of patients with Crohn's disease.The aim of our study was to compare the performance of entero-MRI to endoscopy inassessing disease severity in croh’s disease.

This is a retrospective descriptive study including patients followed for Crohn's disease.Disease activity was assessed using the sMARIA score on entero- MRI and the simpleendoscopic score (SES) on endoscopy.

37 patients were included, with an average age of 39,1±11,77 years. The sex ratio M/Fwas equal to 2. The disease location was ileal(L1) in 3 patients (14.3%),colonic (L2) in 1patient (4.7%), and ileo-colic (L3) in 17 patients (81%).An inflammatory phenotype (B1)was observed in 7 patients (33.3%), a stenosing phenotype (B2) in 13 patients (61.9%)and a fistulizing/penetrating phenotype in 7 patients (33.3%).A significant correlation was observed between the sMaRIA radiological score andendoscopic activity of Crohn's disease with a statistically significant difference (p=0.020.Significant performance of the sMaRIA score was observed in predicting endoscopicdisease activity (AUC=0.675; CI=0.463–0.886, p=0.119). An sMaRIA score greater than1 was correlated with severe endoscopic activity, with a sensitivity and specificity of 66%and 54%, respectively.

In our study, there was a positive correlation between the sMARIA and the SES inassessing Crohn's disease activity. This radiological score should be used in practice tooptimize patient management.