Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New bilateral lower lobe airspace opacities are worrisome for infection . There is also a new small left pleural effusion . The right lung is clear . There is no pneumothorax . The heart and mediastinum are within normal limits .
    OUTPUT:
    
New bilateral lower lobe pneumonia with a small left parapneumonic effusion .