Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Chronic cardiomegaly is mild to moderate , with a left ventricular configuration . The cardiomediastinal contours are stable . Retrocardiac opacity correlates on the lateral view to density overlying the lower thoracic spine , compatible with left lower lobe consolidation . Linear opacities in the right mid lung are similar to prior , compatible with scarring . No pleural effusion or pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
Left lower lobe pneumonia .