Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An AP upright radiograph of the chest is provided . There is a heterogeneous opacity in the right lower lobe . The lungs are otherwise clear . Mild cardiomegaly is a chronic finding . Otherwise , the hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
1 . Right lower lobe pneumonia . 2 . Chronic mild cardiomegaly .