Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP upright radiograph of the chest demonstrates an enlarged heart , stable in appearance since prior radiograph dated 2 hr previously . There appears to be increased aeration in the right lower lung base . However , cephalization of vessels , diffuse patchy opacities and prominent pulmonary vasculature are consistent with mild pulmonary edema . Obscuration of the bilateral costophrenic angles is consistent with probable pleural effusions . Patchy bibasilar opacities likely reflect atelectasis . No acute osseous abnormalities are identified . Cervical spine fusion hardware is noted .
    OUTPUT:
    
Mild pulmonary edema with small effusions and bibasilar opacities , thought to reflect atelectasis though infection can not be excluded .