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  • Title: Cell population obtained by bronchoalveolar lavage in Pneumocystis carinii pneumonitis.
    Author: Fleury J, Escudier E, Pocholle MJ, Carre C, Bernaudin JF.
    Journal: Acta Cytol; 1985; 29(5):721-6. PubMed ID: 3876677.
    Abstract:
    In the course of bronchoalveolar lavages performed in 115 immunocompromised patients in order to investigate the occurrences of pneumonitis, Pneumocystis carinii pneumonia was diagnosed by demonstration of cysts in bronchoalveolar lavage specimens from 11 patients. The cellular phenomena associated with P. carinii infection at the level of the alveolar space were evaluated. Differential cell counts on bronchoalveolar lavage preparations stained by the May-Grünwald-Giemsa method were performed in immunocompromised patients and in ten nonimmunocompromised patients without any respiratory disease. A decrease in the alveolar macrophage count associated with an increase in the polymorphonuclear neutrophil count and the presence of plasma cells and/or immunoblasts was highly suggestive of P. carinii pneumonia. These cellular changes in bronchoalveolar lavage specimens are discussed in relation to the pathologic features usually described in P. carinii pneumonia.
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