Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes which results in bronchovascular crowding . Increased opacification of the bilateral bases likely represents atelectasis . There is no pneumothorax , pleural effusion , or consolidation . The mediastinal and hilar contours are unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .