Question: In April 2015, a 68-year-old woman with refractory inflammatory bowel disease was referred to our hospital for further examination. She had a history of pulmonary tuberculosis. Her symptoms of self-remitting fever, diarrhea, and abdominal pain initially occurred in 2005. Colonoscopy revealed multiple erosions with loss of mucosal vascularity throughout the colorectum. Although she was administered 4 g of mesalazine per day, her symptoms recurred. In 2014, ileocolonoscopy showed multiple ulcers and erosions in the terminal ileum and the ascending colon.