Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , moderate pulmonary edema is improved with unchanged small right pleural effusion and persistent bibasilar and right mid lung opacifications could represent pneumonia in the right clinical setting . Moderate cardiomegaly is unchanged . No pneumothorax . Unchanged positioning of tracheostomy .
    OUTPUT:
    
Improvement of pulmonary edema with stable small right pleural effusion and persistence of bibasilar and right mid lung opacities since ___ . This could represent pneumonia in the right clinical setting .