Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . Diffuse alveolar and interstitial opacities are worsened from ___ . A faint focal left lower lung opacity is concerning for pneumonia . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are normal .
    OUTPUT:
    
1 . A faint , focal left lower lung opacity is concerning for pneumonia . 2 . Diffuse alveolar and interstitial opacities are worsened from ___ and likely represents mild to moderate pulmonary edema .