Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is left basilar opacity , best seen on the lateral view . Elsewhere , the lungs are clear within limitation of low lung volumes . The cardiomediastinal silhouette is stable . Median sternotomy wires are again noted . No acute osseous abnormalities .
    OUTPUT:
    
Dense left basilar opacity compatible with pneumonia in the proper clinical setting . Repeat after treatment suggested especially in light of prior abnormality in the similar location on remote prior .