Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Suboptimal and prior tree effort . The trachea is central . The cardiomediastinal contour is unchanged compared to the prior study . A dual lumen port terminates in the mid SVC . No consolidation , pneumothorax or pleural effusions seen . The visualized bony structures are unremarkable in appearance .
    OUTPUT:
    
No acute cardiopulmonary process seen .