Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal views of the chest . Lung volumes are low , exaggerating heart size which remains moderately enlarged . Large hiatal hernia is air-filled and slightly displaces the heart to the right . Prominence of the mediastinum is attributed to patient rotation and stable widening of the vascular pedicle . No focal consolidation , pleural effusion , or pneumothorax is appreciated .
    OUTPUT:
    
No acute cardiopulmonary process .