Multiple cavitating masses in an immunocompromised host with rheumatoid arthritis-related interstitial lung disease: an unusual expression of cytomegalovirus pneumonitis.

Cytomegalovirus is a known opportunistic infection in immunocompromised individuals. We document multiple cavitating lung masses caused by cytomegalovirus in a patient with rheumatoid arthritis-induced interstitial lung disease on immunosuppressant medication, an unusual expression of CMV pneumonitis. With increasing use of immunosuppressive therapy and increase in AIDS, pulmonary cytomegalovirus infection is expected to be a more frequently encountered disease and familiarity with its uncommon radiological manifestations will be advantageous.