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中叶综合征(Middle Lobe Syndrome,MLS)又称Brock综合征,是一组非特异性的右肺中叶疾病。狭义的MLS的病理基础为中叶支气管旁有肿大的淋巴结,支气管狭窄,中叶不张或膨胀不全,阻塞性肺炎[1]。广义的MLS指各种原因造成的右肺中叶不张或慢性炎症,不管其是否伴有支气管旁淋巴结肿大
Middle Lobe Syndrome (MLS), also known as Brock’s syndrome, is a group of nonspecific right middle lobe diseases. Narrow sense of the MLS pathological basis for the middle of the bronchial lymph nodes are swollen, bronchial stenosis, atelectasis or dilatation of the middle, obstructive pneumonia [1]. The broad sense of the MLS refers to a variety of causes of right middle lobe atelectasis or chronic inflammation, regardless of whether it is accompanied by bronchial lymph nodes