A 32-year-old man with an 8-year history of Crohn's disease (Montreal classification A2, L3, B2p) presented with recurrent abdominal pain. After regular treatment with ustekinumab for 3 years, recent computed tomography revealed severe stricture in the ascending colon ([Fig. 1]), and colonoscopy showed colorectal mucosal healing. However, two tiny holes were observed and could not be passed by the colonoscope ([Fig. 2]).
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Ma et al. (2024) studied this question.
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