Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Within the right cardiophrenic recess , a focal opacity reflects focal eventration of the right hemidiaphragm as seen on the subsequent chest CT . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality .