Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity is noted in the left upper lobe in the region of known lesion . Additional interstitial opacities are noted and likely represent mild pulmonary edema . There is no pneumothorax . Cardiac and mediastinal silhouettes are normal .
    OUTPUT:
    
Known lesion is again noted in the left upper lobe . Mild pulmonary edema .