Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral lung volumes are low . Since ___ , homogeneous haze in bilateral lower lungs obscuring the diaphragmatic margins suggestes new mild to moderate layering effusion associated with lower lung atelectasis . Heart size is normal . Mediastinal and hilar contours are normal .
    OUTPUT:
    
New bilateral mild to moderate layering effusion with passive atelectasis of lower lungs