Pneumomediastinum in an HIV-infected patient with cytomegalovirus pneumonitis.

A pneumomediastinum is an unusual complication of respiratory infections in HIV-positive patients, usually reported in association with pneumocystis pneumonia. We describe a case of an HIV-positive patient with a pneumomediastinum who had cytomegalovirus pneumonitis. This is an important reminder to clinicians, since cytomegalovirus pneumonitis and pneumocystis pneumonia have a similar clinical and radiological presentation.