Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged . Mediastinal contours are unchanged with known mediastinal lymphadenopathy better assessed on the previous CT . Left subclavian central venous catheter tip terminates in the upper SVC , unchanged . Hilar contours are similar with mild enlargement compatible with pulmonary arterial hypertension as noted previously . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Moderate multilevel degenerative changes are demonstrated in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Known mediastinal lymphadenopathy and enlargement of the pulmonary arteries better assessed on the previous CT .