Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Lungs are clear and the pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . No acute osseous abnormality is detected . Curvilinear lucency within the left subdiaphragmatic region could potentially reflect a tiny amount of pneumoperitoneum .
    OUTPUT:
    
No acute cardiopulmonary process seen . Curvilinear lucency in the left subdiaphragmatic region could reflect a small amount of pneumoperitoneum . Dedicated supine and upright AP abdominal radiographs are recommended for further assessment .