Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Within the left upper quadrant of the abdomen , in the region of the stomach , there is a radiopaque foreign body resembling the spring and tip of a pen .
    OUTPUT:
    
Radiopaque foreign body resembling the spring and tip of a pen within the left upper quadrant of the abdomen , likely within the stomach . No acute cardiopulmonary process .