Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume but clear . The cardiac silhouette is mildly enlarged . The mediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . Left - sided pacer terminates with its leads in the right atrium and right ventricle . Right - sided pacer leads are abandoned and fractured . Osteoacrolysis of the right clavicle is noted , unchanged . Also unchanged , is right shoulder DJD with a high riding right humeral head likely related to chronic rotator cuff injury .
    OUTPUT:
    
No acute intrathoracic process .