Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is again mildly enlarged . The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The lungs appear clear . Minimal degenerative changes are noted along the thoracic spine . There has been no significant change .
    OUTPUT:
    
Mild cardiomegaly , although somewhat striking for age . No definite evidence of acute disease .