Colonoscopy was repeated, which now showed rectal ulcerations and nodular lesions, pancolitis, and friability of the ileocecal valve (Figure 1); the terminal ileum could not be intubated.

The International Bowel Ultrasound Segmental Activity Score (IBUS-SAS) in the terminal ileum at diagnosis emerged as the most accurate predictor of ileocecal resection within the first year of disease ...