Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . The lungs are hypoexpanded but clear without focal consolidation concerning for pneumonia . Mild left basilar atelectasis is seen . The upper abdomen is unremarkable without evidence of pneumoperitoneum .
    OUTPUT:
    
No acute cardiopulmonary process . No pneumoperitoneum .