Bronchoalveolar lavage cell analysis in a child with chronic lipid pneumonia

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<jats:p>In an asymptomatic 4 yr old child with radiographic evidence of parenchymal lung disease, bronchoalveolar lavage (BAL) yielded the diagnosis of chronic lipid pneumonia caused by chronic aspiration of mineral oil given as a laxative. BAL analysis showed a marked reduction in the total number of alveolar macrophages; almost 70% of these cells contained intracytoplasmic lipid vacuoles. It also disclosed lymphocytic (cytotoxic/suppressor) alveolitis. A high percentage of lymphocytes expressed antigen markers of activation (human leucocyte antigen (HLA)-DR), CD54 and CD25). BAL analysis 18 months after mineral oil intake revealed that lymphocytes bearing antigen markers of activation had markedly decreased whereas alveolar macrophages (normal and lipid-laden) had increased. A subsequent whole lung BAL was considered unnecessarily invasive in this otherwise healthy child.</jats:p>

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