[Biochemical and cytological study of the alveolar lavage fluid in 4 cases of lipid pneumopathy].

Four cases of interstitial lung disease caused by chronic inhalation of paraffin oil are reported. The disease is facilitated by disorders of deglutition or gastro-oesophageal reflux. The diagnosis is confirmed by chromatography on a thin slice of silica gel of the lipid extract of broncho-alveolar lavage fluid.