2019 Volume 94 Issue 1 Pages 113-115
An 81-year-old woman visited our hospital in September 20XX+2, having muddy stools 4-5 times per day since 20XX. Lower gastrointestinal endoscopic examination revealed enlargement of the Bauhin valve and multiple shallow ulcers with an annulus tendency from the ascending colon to the descending colon, with a shallow irregular ulcer observed in the sigmoid colon. Because diagnosis was not reached from pathological findings or culture of the intestinal juice, we decided to follow-up with symptomatic treatment. At the six month reexamination, Mycobacterium kansasii (M.kansasii) was detected in an acid-fast bacterial culture of intestinal juice. We diagnosed Non-tuberculous mycobacterial colitis caused by M.kansasii and started treatment with anti-tuberculosis drugs. After the treatments started, the symptoms were improved, and ulcers almost disappeared on endoscopic findings. Most cases of M.kansasii were reported in lung infection cases, and cases of colitis were not reported in Japan Medical Abstracts Society.
