[A case of ischemic colitis in a patient with Takayasu's arteritis].

Ischemic colitis is one of the most common intestinal ischemic injury in which more than 90% of patient are over 60 year-old. It results from impaired perfusion of blood to the bowel and is rarely caused by vasculitis such as systemic lupus erythematosus, polyarteritis nodosa, and Takayasu's arteritis. Takayasu's arteritis affects the aortic arch, medium-sized and large arteries but rarely involves inferior mesenteric artery. We report a case of Takayasu's arteritis involving inferior mesenteric artery which developed ischemic colitis in a 70 year old female. To the author's knowledge this is the first case report in Korea. A 70 year old woman who had suffered from Takayasu's arteritis for 5 years was admitted for sudden abdominal pain and hematochezia. On sigmoidoscopy, there were multiple segmental longitudinal ulcerations around splenic flexure and diffuse hemorrhagic edematous mucosa from descending colon to sigmoid colon. On abdominal CT angiography, inferior mesenteric artery was not traced. We diagnosed it as ischemic colitis combined with Takayasu's arteritis. After the conservative treatment, abdominal pain and hematochezia disappeared. She was followed up to 2 years without recurrence of symptoms.