Cytomegalovirus-induced interstitial pneumonitis in a patient with dermatomyositis.

Dermatomyositis (DM) patients might present with pulmonary involvement as the first manifestation or during the follow-up period. It is sometimes difficult to determine whether the clinical manifestations related with pulmonary involvement are due to DM or to an infectious process. We report a case of DM patient who developed interstitial pneumonitis induced by cytomegalovirus (CMV) while receiving immunosuppressive treatment. To the best of our knowledge, this is the second report in the literature of interstitial pneumonitis secondary to CMV infection in a patient with DM.