Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . The lungs are well expanded and clear . No consolidation or pulmonary edema is seen . No pleural effusion or pneumothorax is detected . Residual oral contrast from prior CT study is seen in the colon .
    OUTPUT:
    
No acute cardiopulmonary pathology .