Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable , reflective of a mildly tortuous thoracic aorta . The hila are unremarkable . New since prior is a right lower lobe opacity concerning for pneumonia . The lungs are clear elsewhere . There is no pulmonary venous congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
New right lower lobe opacity is concerning for pneumonia .