Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . The lung volumes are low . There is no evidence of intraperitoneal free air . Some air - fluid levels are seen within the small bowel . There is no evidence of pleural effusion , pneumothorax , or significant pulmonary edema . The heart size is normal . On the lateral view , there is a small rectangular - shaped radiopacity overlying the mid thoracic spine posteriorly , likely representing an overlying rib .
    OUTPUT:
    
No evidence of intraperitoneal free air . Multiple air - fluid levels are seen in the small bowel . Rectangular radiopacity overlying the posterior thoracic spine likely represents a rib shadow . However if clinical concern exists , when feasible , repeat PA and lateral radiographs with shallow lateral obliques would be recommended to resolve this finding . The above findings were communicated to Dr . ___ by Dr . ___ ___ telephone at 11 :45 , at the time of discovery .