Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views were obtained of the chest . The lungs are low in volume but clear aside from left basal atelectasis . Haziness in the costophrenic sulci bilaterally is likely due to obscuration and artifact due to body habitus rather than effusion . There is no pneumothorax . The heart is top - normal in size with normal cardiomediastinal and hilar contours .
    OUTPUT:
    
No acute intrathoracic process .