[A case report of Crohn's disease in a child treated with upadacitinib]
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A 12-year-old boy presented with recurrent abdominal pain for more than 5 months and a perianal mass for 10 days. Gastrointestinal endoscopy revealed multiple ulcers in the terminal ileum and colon, and Crohn's disease was diagnosed based on histopathology. T... ...
