Exogenous lipoid pneumonia due to inhalation of spray lubricant (WD-40 lung).

An elderly woman developed lipoid pneumonia due to the inhalation of mist from a spray lubricant that she was using as a liniment for sore back and neck muscles. This unusual practice is reported to be common among older people bothered by rheumatism. The potential for this complication to occur in other patients leads us to present this case report.