Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of normal size with normal cardiomediastinal contours . Lung volumes are low . Bibasilar atelectasis is present . There is slight blunting of the left costophrenic angle . The lungs are otherwise clear without focal or diffuse abnormality . No pneumothorax is visualized . The pulmonary vasculature is unremarkable . Osseous structures are unremarkable . No radiopaque foreign bodies .
    OUTPUT:
    
Small left pleural effusion with bibasilar atelectasis and low lung volumes .