Treatment of Crohn's Disease With Infliximab and Subsequent Development of Takayasu's Arteritis

A 23-year-old man was diagnosed with Crohn's disease (CD) of the large intestine after colonoscopy revealed longitudinal ulcers, and pathology revealed non-caseating epithelioid cell granulomas and anal fistulas. The CD relapsed, and therefore prednisolone (PSL) and infliximab (IFX) treatment was initiated. The PSL was gradually tapered. Steroid-free remission was maintained with IFX. The patient subsequently developed a high fever and headache, while CD-related symptoms did not worsen. Laboratory data showed white blood cells at 14,200/mu L and C-reactive protein at 17.2 mg/ dL. Contrast-enhanced computed tomography revealed thoracoabdominal aortitis, and the patient was consequently diagnosed with ment that immediately reduced the fever and headache. The PSL to maintain CD remission. No further episodes of aortitis relapse were noted after restarting IFX, and the CD currently remains in investigate the possibility of vasculitis.