Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The feeding tube terminates in the stomach . Endotracheal tube terminates at the level of the clavicles . Aeration of the left lung has improved , and the left pleural effusion has substantially decreased . Mild persistent left basilar retrocardiac airspace opacification is likely due to resolving aspiration pneumonia . Mildly increased opacification at the medial right lung base may also be due to new or worsening aspiration .
    OUTPUT:
    
Substantial interval improvement in bilateral aspiration pneumonia as since ___ . However , there may be new or worsening aspiration at the right base .