Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . No focal consolidation is seen . No definite pleural effusion or pneumothorax is seen . There are no findings to suggest pneumomediastinum . The cardiac silhouette is top - normal , likely exaggerated by AP technique . Mediastinal contours are unremarkable . No pulmonary edema is seen .
    OUTPUT:
    
No definite acute cardiopulmonary process .