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目的：探讨高频彩超在诊断及鉴别诊断小儿肠系膜淋巴结炎中应用价值。方法：回顾分析经高频彩超检查临床确诊为小儿肠系膜淋巴结炎的86例患儿，对其二维超声图像及彩色多普勒进行分析。结果：小儿肠系膜淋巴结炎多位于脐周及右下腹，数目＞3，淋巴结纵径1．0～2．2cm ，横径0．5～1．2cm ，纵横比（L/S）＞2，无融合，彩色多普勒显示淋巴结内部血流增多。结论：由于高频彩色多普勒超声安全无创、操作简单、快捷、可重复、准确度高，在诊断及鉴别诊断肠系膜淋巴结炎上可作首选方法，为临床正确处理提供有力的依据，具有较高的应用价值。“,” Objective :To explore the application value of high frequency ultrasonography in the diagnosis and differential diagnosis of mesenteric lymphadenitis in children .Methods :retrospective analysis of the high frequency ultrasound diagnosed 86 cases of mesenteric lym-phadenitis in children ,the two -dimensional and color Doppler ultrasound image analysis .Results :the mesenteric lymphadenitis in children is located in umbilical week and the right lower abdominal lymph nodes ,number of >3 ,diameter of 1 ~ 2 .2cm ,diameter of 0 .5 ~ 1 .2cm , aspect ratio (L/S) of >2 ,no fusion ,color Doppler showed lymph flow increased .Conclusion :the high frequency color Doppler ultrasound noninvasive ,simple ,fast ,reproducible ,accurate ,and in the diagnosis and differential diagnosis of mesenteric lymphadenitis can be used as the first choice method ,provides the powerful basis for the correct treatment clinical ,has higher application value .