Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . As on prior , the lung volumes are low . The lungs are clear of consolidation or pulmonary vascular congestion . The cardiac silhouette is enlarged but stable in configuration . The thoracic aorta is tortuous . Blunting of the posterior costophrenic angle could represent small effusions .
    OUTPUT:
    
No definite acute cardiopulmonary process .