Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left upper chest pacer device with single lead projecting over the right ventricle . There are no apparent abnormalities associated with the device . The mediastinal silhouette and bilateral hila are normal . The cardiac silhouette is upper limits of normal . There are diffuse bilateral airspace opacities with indistinctness of pulmonary vasculature which likely represents increased pulmonary vascular pressures with moderate pulmonary edema . However , in the setting of fevers and concern for sepsis , especially given left lower lobe volume loss / opacification , this appearance is also concerning for bilateral pneumonia . There is a probable small left pleural effusion . There is no right effusion . There is no pneumothorax .
    OUTPUT:
    
Bilateral diffuse airspace opacities which may represent pulmonary edema , but is also concerning for bilateral pneumonia given clinical context . Probable small left pleural effusion .