[Pathomorphology and pathogenesis of acute non-occlusive intestinal ischemia]

Thirty-five postmortem cases of non-occlusive ischemia of the intestine are studied. Five groups are distinguished on the basis of leading pathogenetic factors. Angiospasm and alterations of the blood rheological properties are the main mechanisms in the development of non-occlusive intestinal ischemia, the morphological features of which are segmental necroses and more frequent localization in the ileum. Clinico-morphological analyses and a thorough bacteriological examination are necessary for the differential diagnosis of non-occlusive intestinal ischemia, enteritis and colitis.