Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear but hyperinflated with flattening of the diaphragms and increased AP diameter of the retrocardiac clear space . The cardiac and mediastinal contours are normal . No pleural effusion or pneumothorax . Of note , in the partially imaged upper abdomen , there is a hyperdensity which projects over left upper quadrant which appears to be a foreign body . Correlate for prior history of trauma .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Hyperdense foreign body projecting over the left upper quadrant . Correlate for prior history of trauma .