Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Mild enlargement of cardiac silhouette is noted . The mediastinal contours are unremarkable . There is crowding of bronchovascular structures with mild pulmonary vascular congestion . Patchy atelectasis is demonstrated in the lung bases without pleural effusion . No pneumothorax . No acute osseous abnormalities seen .
    OUTPUT:
    
Low lung volumes with mild pulmonary vascular congestion and probable bibasilar atelectasis .