Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well - expanded and clear . Stable chronic right mediastinal shift and right lower lobe volume loss . Mild cardiomegaly is unchanged . The aorta is tortuous . The hila and cardiac borders are stable .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Mild stable cardiomegaly .