Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart remains moderately enlarged , unchanged compared to the prior exam . Pulmonary vascularity is normal and the lungs are clear . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Unchanged moderate cardiomegaly . Otherwise , no acute cardiopulmonary abnormality .