Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which is likely borderline enlarged . There is crowding of the bronchovascular structures but no overt pulmonary edema is noted . Mediastinal contours are otherwise unremarkable . There is no focal consolidation . No pleural effusion or pneumothorax is visualized . No acute osseous abnormalities seen .
    OUTPUT:
    
Low lung volumes . No definite radiographic evidence for pneumonia .