Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there is an ill defined opacity in the right lower lobe . There has been interval improvement of left lower lobe density . There is redemonstration of cavitary and solid masses in the left upper lobe , better characterized on prior CT from ___ . There is mild interstitial edema . There is no pneumothorax or pleural effusions . Cardiomegaly is unchanged . Lucencies above both diaphragms are consistent with free intraperiotoneal air , likely related to recent surgery .
    OUTPUT:
    
1 . Ill defined opacity in the right lower lobe , which may represent aspiration or developing infectious pneumonia . 2 . Free intraperitoneal air , likely related to recent surgery . 3 . Left upper lobe masses consistent with neoplasms .