Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dual - lead pacemaker / ICD device with leads again terminating in the right atrium and ventricle , respectively . The cardiac , mediastinal and hilar contours appear stable . The lung volumes are low . The interstitium is mild to moderately prominent suggesting interstitial pulmonary edema . There is no definite pleural effusion or pneumothorax . Fissures appear thickened . In the left lower lobe , in addition to new bronchovascular opacity , there is a rounded expansile opacity seen posteriorly . The latter is new and may be due to a somewhat atypical morphology of pneumonia .
    OUTPUT:
    
1 . Findings suggesting on mild to moderate pulmonary edema . 2 . New posterior left basilar opacities suggesting pneumonia but including a somewhat mass - like but newly apparent opacity , new since recent prior radiographs . This may represent an atypical morphology for pneumonia but chest CT could be considered to assess further if the opacity were to fail to clear adequately on follow - up radiographs .