Bronchoalveolar lavage (BAL) cell populations were determined in 47 immunosuppressed @entity1 during episodes of @entity358 . Thirty six @entity1 had @entity791 and 11 had conventional causes of immunosuppression. @entity358 was due to a variety of infectious and noninfectious causes and was similar in both groups. In the @entity791 @entity1 , the mean BAL cell proportions were 64.2 +/- 3.7 percent alveolar macrophages (MACS), 28.7 +/- 3.4 percent lymphocytes, 3.5 +/- 1.8 percent polymorphonuclear cells (PMN) and 1.6 +/- 0.6 percent @entity1712 ( @entity1712 ). The non- @entity791 group had similar findings in the BAL, with 59.3 +/- 8.3 percent MACS, 34.8 +/- 7.2 percent lymphocytes, 5.5 +/- 1.7 percent PMN and 0.4 +/- 0.2 percent @entity1712 . The most striking finding in each group was a significant increase in both the proportion and absolute number of lymphocytes compared to controls. This was in marked contrast to the peripheral blood findings of @entity2905 . There was no characteristic cell profile diagnostic of any specific @entity358 . There was also no direct relationship of the cells present to @entity1576 , @entity854 or survival from @entity358 . This study demonstrates that although there was wide individual variation in lavage findings, a local pulmonary inflammatory reaction consisting predominantly of lymphocytes occurs in the immunosuppressed host during episodes of @entity358 . The significance of this lymphocyte @entity3794 and the complex host pathogen interaction responsible for determining the cell populations present in the lungs of these @entity1 requires further study.

Pulmonary cell populations in the immunosuppressed XXXX . Bronchoalveolar lavage findings during episodes of pneumonitis.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1712 :: ('MESH:D004802', 'Disease') :: ['EOS', 'eosinophils'] @entity2905 :: ('MESH:D008231', 'Disease') :: ['lymphopenia'] @entity3794 :: ('MESH:D011658', 'Disease') :: ['alveolitis'] @entity854 :: ('MESH:D018376', 'Disease') :: ['roentgenographic abnormalities'] @entity358 :: ('MESH:D008171', 'Disease') :: ['lung disease', 'pulmonary disease', 'Pulmonary disease'] @entity1576 :: ('MESH:D012131', 'Disease') :: ['respiratory symptoms'] @entity791 :: ('MESH:D000163', 'Disease') :: ['AIDS']
@entity1 :: (9606,Species) :: ['patient']
