Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip in good position . Enteric tube tip well below diaphragm , tip not included on the radiograph . Left PICC line tip mid SVC . Left infrahilar , basilar opacity , mildly improved . Small left pleural effusion , similar . Biapical pleural thickening , stable . Remainder normal .
    OUTPUT:
    
Mildly improved left lower lung capacity . Small left pleural effusion .