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很多小肠炎症性疾患都会形成溃疡,综合文献有关资料结合多年的临床,就部分炎症性溃疡的病理、X线特点,诊断论述如下。1、小肠溃疡性病变的形成机制1·1 血流障碍性肠炎、缺血性肠炎、血管栓塞性肠炎、新生儿坏死性肠炎、胶原病性肠炎等,因血流障碍发生于肠系膜动,静脉或肠系膜附着部近端的肠壁动脉,所以,越是远侧其缺血越严重。因此,溃疡常发生于肠系膜附着部对侧的肠壁。1·2 理化因素障碍性肠炎,如尿毒症、铅中毒、放射性肠炎等。这类小肠溃疡与缺血性改变有关。慢性尿毒症常伴有下部回肠浅溃疡,因氨刺激局部细小动脉产生循环障碍而致,放射性肠炎则由于血管内膜而形成血栓,产生肠管微循环障碍而形成溃疡。
Many small bowel inflammatory diseases will form ulcers, the literature combined with many years of clinical literature on the pathology of some inflammatory ulcers, X-ray features, the diagnosis is as follows. 1, the formation of small bowel ulcerative disease mechanism 1.1 bloodstream disorders, ischemic enteritis, vascular embolic enteritis, neonatal necrotic enteritis, collagen-induced enteritis and so on, due to blood flow disorders occurred in the mesenteric artery and vein Or mesenteric attachment of the proximal part of the intestinal wall arteries, so the more distal ischemia more serious. Therefore, ulcers often occur in the intestinal wall opposite the mesenteric attachment. 1.2 Physical and chemical factors Barrier enteritis, such as uremia, lead poisoning, radiation enteritis and so on. These small intestinal ulcers and ischemic changes. Chronic uremia is often accompanied by lower ileal shallow ulcers, due to ammonia to stimulate the circulation of local small artery caused by obstruction, radiation enteritis is due to intima and thrombosis, resulting in intestinal microcirculation and the formation of ulcers.