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目的探讨小儿下消化道出血的诊治方法.方法对本组21例小儿下消化道出血的病因及部位综合分析.做好术前检查与准备,17例采用纤维结肠镜检查,4例采用放射性核素扫描.结论对下消化出血患儿应针对不同病例的情况选择检查手段,多数情况下肠镜为首选检查项目,少数病例可选择放射性核素扫描等找出病因进行有效的治疗.“,”Objective To explore the diagnosis and treatment of lower gastrointestinal bleeding in children methods. Methods There were 21 cases of pediatric patients with lower alimentary tract hemorrhage etiology and location analysis. Preoperative examination and preparation, 17 cases by colonoscopy, 4 cases with radionuclide scanning. Conclusion The lower gastrointestinal bleeding in children should be tailored to the different cases of choice examination means, in most cases colonoscopy is selected items, a smal number of cases may choose radionuclide scan to find out the cause and effective treatment.