Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged including mild unfolding of the thoracic aorta . A ventriculoperitoneal shunt catheter again courses along the medial left hemithorax without discontinuity . Calcified lung nodules suggesting granulomas appear unchanged . Otherwise , the lungs appear clear . There are no pleural effusions or pneumothorax . The osseous structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .