Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A central venous catheter ends at the low SVC . No focal consolidation is seen . There is no evidence of pneumothorax or pleural effusion . The cardiac silhouette is mildly enlarged . Enlargement of the pulmonary arteries is seen . Views of the upper abdomen demonstrate surgical clips from prior cholecystectomy . No acute osseous abnormalities detected .
    OUTPUT:
    
No radiographic evidence of pneumonia .