Fig. 1

CTE and endoscopic manifestations before and after ATT. A 26-year-old male evaluated as having a “good response” by both CTE and clinical evaluation methods. a CTE image of the ileocecal area before ATT showing bowel wall thickening, stenosis and abnormal contrast-enhancement (arrow). b Colonoscopy image of the ileocecal area before ATT showing large ulcers and stenosis. c CTE image of the same area after 3 months of ATT, showing decreased lesion range, bowel wall thickness and stenosis. d Colonoscopy image after ATT, showing a significant shrinkage of ulcers and stenosis, corresponding to the CTE image