Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest provided . Lung volumes are low . Small to moderate bilateral pleural effusions are noted , left greater than right . There is compressive lower lobe atelectasis . Pneumonia difficult to exclude . There is pulmonary vascular congestion without frank edema . No pneumothorax . Heart size can not be assessed . Mediastinal contours grossly unremarkable aside from aortic vascular calcification . No acute bony injuries .
    OUTPUT:
    
Pulmonary congestion with bilateral effusions , left greater than right in compressive lower lobe atelectasis . Limited exam given low lung volumes .