Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate a focal opacity projecting over the left midlung zone worrisome for infection . The right lung is clear . Cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion . There is no pneumothorax .
    OUTPUT:
    
Focal opacity projecting over the left midlung zone in the appropriate clinical setting consistent with pneumonia .