BACKGROUND Meckel diverticulum is one of the most important causes of small bowel bleeding in children. Reports suggest that ultrasonography can be used as an alternative examination for children with negative radionuclide scanning results or children with atypical clinical manifestations. OBJECTIVE To evaluate the diagnostic accuracy of high-frequency ultrasound in children with bleeding Meckel diverticulum. MATERIALS AND METHODS We collected the data of children who were admitted to our hospital for the main symptom of bloody stool from February 2006 to December 2017. Ultrasonography was performed in all children. The final diagnosis was confirmed by pathological analysis or clinical follow-up observation. We evaluated the diagnostic performance of ultrasonography according to the final diagnosis. RESULTS A total of 784 eligible children were enrolled in the study. Presenting symptoms or findings included black and red stool in 528 (67.3%), bright red stool in 51 (6.5%) and obscure or occult bloody stool in 205 (26.1%). Anemia was diagnosed in 489 (62.4%). Ultrasonography diagnosed Meckel diverticulum with a sensitivity of 93.6% (95% confidence interval [CI] 91.0-95.6%) and a specificity of 98.1% (95% CI 95.9-99.3%). CONCLUSION High-frequency ultrasound diagnosis of Meckel diverticulum in children has high sensitivity and specificity.

中文翻译：

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高频超声对小儿憩室出血的诊断准确性。

背景技术小憩室是儿童小肠出血的最重要原因之一。报告表明，对于放射性核素扫描结果阴性的儿童或具有非典型临床表现的儿童，超声检查可用作替代检查。目的评价高频超声对小儿憩室出血的诊断准确性。材料与方法我们收集了2006年2月至2017年12月因血便主要症状而入院的儿童的数据。所有儿童均进行了超声检查。通过病理分析或临床随访观察证实了最终诊断。我们根据最终诊断评估了超声检查的诊断性能。结果共有784名合格儿童参加了研究。症状或表现包括黑色和红色的粪便528（67.3％），鲜红色的粪便51（6.5％）和不明或隐血性粪便205（26.1％）。489例被诊断为贫血（62.4％）。超声诊断Meckel憩室的敏感性为93.6％（95％置信区间[CI] 91.0-95.6％），特异性为98.1％（95％CI 95.9-99.3％）。结论高频超声诊断小儿憩室有较高的敏感性和特异性。6％（95％置信区间[CI] 91.0-95.6％）和特异性98.1％（95％CI 95.9-99.3％）。结论高频超声诊断小儿憩室有较高的敏感性和特异性。6％（95％置信区间[CI] 91.0-95.6％）和98.1％（95％CI 95.9-99.3％）的特异性。结论高频超声诊断小儿憩室有较高的敏感性和特异性。