Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle streaky left basilar retrocardiac opacity most likely relates to atelectasis . No definite focal consolidation is seen . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable , as are the hilar contours . The lungs remain hyperinflated . .
    OUTPUT:
    
No acute cardiopulmonary process .