Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and hilar contours are unremarkable . Calcifications are seen along the aortic knob . The lungs are clear . There is no pleural effusion or pneumothorax . There is a chronic appearing deformity of the left shoulder .
    OUTPUT:
    
No acute intrathoracic process .