Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well expanded and clear . Heart size is normal . Mild cephalization of pulmonary vessels and large hilar arteries may indicate early cardiac dysfunction . . There is no large pleural effusion . Transvenous leads from a left pectoral pacemaker follow their expected courses to the right atrium and ventricle . Surgical clips project over the left upper quadrant .
    OUTPUT:
    
No evidence of acute intrathoracic abnormality .