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261例便血原因以息肉、肠道炎症、肿瘤多见。对内镜下慢性结肠炎应重视其病因追踪,强调全结肠检查以免漏诊。
261 cases of blood in the cause of polyps, intestinal inflammation, cancer more common. Chronic colitis endoscopy should pay attention to its pathogeny, emphasizing the entire colon examination so as not to miss diagnosis.