Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views the chest provided . There is left perihilar opacity corresponding to a posterior consolidation on the lateral view which is concerning for pneumonia in the superior segment a left lower lobe . Right lung is clear . Heart size is normal . Mediastinal contours unremarkable . No large effusion or pneumothorax . Bony structures are intact .
    OUTPUT:
    
Left lower lobe superior segment pneumonia .