Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Loculated left pleural effusion has decreased in size with only a small residual effusion remaining . Adjacent atelectasis in the left lower lobe and lingula has also improved . Small nodular opacity persists at the level of the third left anterior rib , has previously been shown to be stable since ___ , favoring either a granuloma or hamartoma . A sub - cm nodule is also demonstrated at the junction of the right third anterior and right seventh posterior ribs , consistent with a benign granuloma on prior chest CT . No pleural effusion or acute skeletal findings .
    OUTPUT:
    
Decrease in loculated left pleural effusion as well as improved aeration at left lung base . Benign bilateral upper lobe lung nodules .