Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Indistinct pulmonary vascular markings are noted . Additional increased opacity projects over the lung bases posteriorly on the lateral view without clear correlate on the frontal view and likely in part due to atelectasis . Posterior costophrenic angles are not clearly delineating raising possibility of small effusions . Mild cardiac enlargement is noted . Tortuosity of the thoracic aorta is unchanged . No acute osseous abnormalities . IVC filter is visualized on the lateral view .
    OUTPUT:
    
Pulmonary vascular congestion . Increased opacity at the lung bases on the lateral view only , potentially due to atelectasis . Small pleural effusions are possible .