Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There are heterogeneous bilateral lower lobe opacities which possibly represent pneumonia . Cardiomediastinal and hilar contours are unchanged . No pneumothorax or pleural effusion .
    OUTPUT:
    
Heterogeneous bilateral lower lobe opacities possibly represent pneumonia . Repeat chest radiograph with improved inspiratory effort to be performed for further evaluation .