Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Vague right lower lung peripheral opacity is in a similar distribution as tree in ___ opacities on the prior exam . Also in the inferior lingula is a similar pattern . The cardiomediastinal silhouette is unremarkable . A right chest wall port catheter tip terminates at the cavoatrial junction . There is no pneumothorax or pleural effusion . The imaged upper abdomen demonstrates a somewhat distended stomach with food particles within . The bones are intact .
    OUTPUT:
    
Vague opacities in the right lower lobe and lingula corresponding to tree - in - ___ opacities on the prior CT . Differential diagnosis includes inflammatory etiology , aspiration or atypical myocbacterial infection .