Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . This accentuates the size of the cardiac silhouette which is at least mildly enlarged . The aorta is unfolded . Mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures without overt pulmonary edema . Streaky and linear opacities in the lung bases likely reflect areas of atelectasis . No pleural effusion , focal consolidation or pneumothorax is visualized . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .