Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hypoinflated , accounting for vascular crowding but no evidence of focal opacities . Cardiomediastinal and hilar contours are unremarkable . The cardiac size is top normal . There is no pleural effusion or pneumothorax . A right subclavian stent is noted and unchanged from prior examination .
    OUTPUT:
    
No acute intrathoracic process .