Cytomegalovirus infection with idiopathic pulmonary fibrosis. Diagnosis suggested by bronchoalveolar lavage.

Bronchoalveolar lavage was used to provide important diagnostic information for a patient found to have idiopathic pulmonary fibrosis and concomitant cytomegalovirus infection. The use of this procedure may not only provide useful information regarding the underlying disease, but may also suggest alternative diagnostic possibilities.