Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph provided . The endotracheal tube is positioned with its tip 2 .8 cm above the carina . The NG tube tip is seen in the region of the distal stomach . A drain is present in the left upper quadrant . There is left basilar opacity , not significantly changed from prior exam . Aside from this , no convincing abnormality . The previously noted right upper lobe lung nodule is not clearly visualized . Cardiomediastinal silhouette is stable . No free air seen below the right hemidiaphragm .
    OUTPUT:
    
1 . Appropriately positioned endotracheal tube . 2 . Persistent left basilar opacity which could represent infection / atelectasis versus aspiration .