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对８例特发性间质性肺泡炎（ＩＩＰ），１０例结缔组织病合并间质性肺泡炎（ＩＰ一ＣＶＤ），６例过敏性肺泡炎（ＨＰ）的支气管肺泡灌洗液（ＢＡＬＦ）中细胞总数及分类进行测定，并与２７２例不吸烟的健康者作对照比较：ＨＰ组细胞总数和淋巴细胞比率不但显著高于对照组，而且明显高于ＩＩＰ组和ＩＰ－ＣＶＤ组（Ｐ＜０．０１）；ＩＰ－ＣＶＤ组的淋巴细胞比率不但显著高于对照组而且显著高于ＩＩＰ组（Ｐ＜０．０１）；ｌＩＰ组的中性粒细胞比率不但显著高于对照组，而且明显高于ＩＰ－ＣＶＤ组（Ｐ＜０．０１）。提示ＢＡＬＦ细胞学测定对弥漫性间质性肺疾病的诊断、鉴别有一定的临床意义。
Eight cases of idiopathic interstitial alveolitis (IIP), 10 cases of connective tissue disease complicated with interstitial alveolitis (IP-CVD), 6 cases of allergic alveolitis (BAL) of bronchoalveolar lavage fluid (BALF) The total number of cells and their classification were measured and compared with 272 healthy non-smokers: the number of total cells and lymphocyte in HP group were significantly higher than those in control group and IP group (P < 0.01). The ratio of lymphocytes in IP-CVD group was significantly higher than that in control group and significantly higher than that in IIP group (P <0.01). The neutrophil ratio in IP group was significantly higher than that in control group Higher than IP-CVD group (P <0.01). Tip BALF cytology of diffuse interstitial lung disease diagnosis, identification of some clinical significance.