Long-term follow up study on ischemic collitis - With focus on stricture and recurrent types

Abstract

One hundred thirty cases of ischemic colitis diagnosed at our hospital were studied with the focus on stricture and recurrent types. The mean age of onset was 59.3 years, 62.0 years in males, and 56.0 years in females. The sex ratio was 45 males: 85 females. Clinical types were 109 transient type, 9 stricture type, and 12 unknown. In the stricture type, inflammatory indicators such as leukocyte count, erythrocyte sedimentation rate, and CRP were more elevated and the period for CRP to reach normal level was longer than those of the transient type. In the endoscopic findings of the stricture type, longitudinal ulcer and circular inflammation were more frequently observed and the period for healing was longer than those of the transient type. The degree of stenosis in the five followed up cases gradually improved. To estimate the recurrence rate, the progress of 115 patients were surveyed by interview or questionnaire. There were 13 recurrent cases: eight cases were confirmed by endoscopic examination and five cases were suspected of recurrence by questionnaire. The accumulated recurrent rates were 3.8% at one year, 8.5% at two years, and 12.1% at five years after onset. Recurrent cases were associated with other diseases more frequently and included four cases of the stricture type. The site of recurrence in the six cases that demonstrated recurrence by endoscopy was the same as that of the first occurence.