Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal , hilar and cardiac contours . Lungs are clear . No pleural effusion or pneumothorax is evident . Minimal elevation of left hemidiaphragm noted , possibly due to gaseous distention . No displaced rib fracture identified . No thoracic spine fractures or malalignment identified .
    OUTPUT:
    
No acute intrathoracic process .