Diagnosis of a case of lipoid pneumonia by bronchoalveolar lavage. 
Exogenous lipoid pneumonia (ELP) was diagnosed by bronchoalveolar lavage (BAL) in a 57-year-old woman with a long history of using oily nose drops.  Since clinical and roentgenological presentations are nonspecific, BAL, along with specific staining of recovered alveolar macrophages, represents a safe alternative to more invasive diagnostic procedures whenever a diagnosis of ELP is suspected.