Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Relatively low lung volumes are noted with crowding of the bronchovascular markings and left basilar opacity which is likely due to atelectasis and a prominent fat pad . The lungs are otherwise clear , there is no effusion . Cardiomediastinal silhouette is stable as well as tortuosity of the descending thoracic aorta . No acute osseous abnormalities .
    OUTPUT:
    
No definite acute cardiopulmonary process .