Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is rotated to the left , somewhat limiting evaluation , however no focal opacity to suggest pneumonia is seen . No pleural effusion , pulmonary edema , or pneumothorax is present . The heart size is normal . There are calcifications of the aortic arch . The patient is status post median sternotomy and CABG . Degenerative changes of the thoracic spine are present including bridging osteophyte formation .
    OUTPUT:
    
No acute intrathoracic process .