Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiac silhouette is enlarged , likely exaggerated due to technique . Central pulmonary vasculature is somewhat prominent , also likely exaggerated due to low lung volumes . No definite pleural effusion or pneumothorax is identified . There is no definite focal consolidation .
    OUTPUT:
    
No acute intrathoracic abnormality .