Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are clear . There is no evidence of pneumonia . The heart , mediastinal , hilum , and pleural surfaces are normal . Calcification of the cartilage in the ribs overlies the lung . There is no pulmonary vascular congestion or pulmonary edema . No pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia or CHF .