Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral nodular airspace opacities are present in both lung fields , concerning for pneumonia . Moderate - sized left pleural effusion is noted . Cardiomediastinal contours are normal . No pneumothorax is appreciated .
    OUTPUT:
    
Bilateral airspace opacities and left pleural effusion , findings concerning for pneumonia . Follow up radiograph to ensure resolution would be helpful to exclude underlying pathology .