Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . There is mild silhouetting of the right heart border , suggestive of early right middle lobe pneumonia . There is no effusion or pneumothorax . Mediastinal and hilar contours are normal . Heart size is normal . Right Port - A - Cath terminates in the lower SVC .
    OUTPUT:
    
Mild silhouetting of the right heart border suggests early right middle lobe pneumonia .