Endoscopic features of three cases of non - Occlusive mesenteric ischemia

We herein describe endoscopic features of three patients with non-occlusive mesenteric ischemia (NOMI). A 79-year-old man underwent a right hemi-colectomy because of the development of NOMI, despite normal findings on colonoscopy 31 hours earlier. The second patient was an 89-year-old man who presented with bloody diarrhea 10 hours after respiratory shock due to aspiration pneumonia. Colonoscopy revealed congested purple-colored or hyperemic edematous mucosa from the transverse colon to the ileum. The third patient was an 89-year-old woman who recovered from NOMI with conservative therapy although abdominal CT images had depicted extended thickening of the right colon with portal vein gas. On colonoscopy performed 15 days after presentation, multiple longitudinal or various-shaped ulcers with edematous mucosa were scattered from the ascending to descending colon, and the ulcers were not completely scarred six months later.