Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . No focal consolidation , large effusion or pneumothorax . There is no central vascular congestion or overt pulmonary edema . Mediastinal and hilar contours are normal . Mild cardiomegaly . Mild calcification of the aortic knob is noted .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Mild cardiomegaly .