Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The lungs appear essentially clear bilaterally . Evaluation is somewhat limited due to underpenetrated technique due to large body habitus . There is no large effusion or pneumothorax . There may be a small hiatal hernia . Heart size is within normal limits . The mediastinal contour is normal . No bony abnormality is seen . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings . Possible hiatal hernia .