Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are decreased . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is accentuated due to underinflation of the lungs , but likely top normal in size . The mediastinal and hilar contours are within normal limits . The visualized upper abdomen is unremarkable on this supine view . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute intrathoracic process , specifically no pneumothorax .