Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left anterior chest wall biventricular ICD is in place . Aortic and mitral valve replacements project over the heart . Postoperative cardiomediastinal silhouette is otherwise unchanged . Mild central vascular congestion without frank interstitial edema . Low lung volumes but lungs are otherwise clear . No large effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No pneumothorax .