Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright PA and lateral views of the chest demonstrate no acute intrathoracic process . The mediastinal , pleural and pulmonary structures are unremarkable . The heart size is top normal . There is no free air underneath the diaphragm . A stent is seen within the common bile duct . There are no suspicious osseous lesions .
    OUTPUT:
    
No acute intrathoracic process or findings suggestive of bowel perforation .