Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is within normal limits . The aorta is mildly unfolded . Mediastinal contours are otherwise unremarkable . The pulmonary vasculature is normal . Lungs are hyperinflated but clear . The previously seen right apex nodular opacity is not clearly demonstrated on the current exam . Eventration of the right hemidiaphragm is incidentally noted . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .