中叶综合征是指因支气管本身病变或支气管外肿大淋巴结的压迫阻塞，引起右肺中叶（或左肺舌叶）肺不张，肺叶缩小或并发炎症实变，又称Brock综合征或Graham-Burford-Mayer综合征。单纯性炎症等引起的肺中叶收缩性不张不属本综合征。
目的了解儿童右肺中叶综合征的主要病原类型。
Objective To analyze the etiologic types of children with right lung middle lobe syndrome.
方法：对69例小儿中叶综合征病例进行临床分析。
Methods: a clinical analysis of the syndrome was made in 69 infants.
结论临床医生应该充分认识右肺中叶综合征的发病机制和治疗手段，并熟悉手术的基本步骤。
Conclusion Clinician should fully know in the right lung the leaf syndrome pathogenesis and the treatment method, and familiar surgery basic step.
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