Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Right upper lobe known pneumatocele is not clearly seen on the current exam . No focal consolidation , pleural effusion or pneumothorax is present . Moderate degenerative changes of the thoracic spine are visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Previously demonstrated pneumatocele within the right upper lobe is better assessed on the recent CT .