Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Port - A - Cath terminates in the lower superior vena cava . The cardiac , mediastinal and hilar contours appear stable . There is a new right infrahilar opacity . In addition there is streaky new retrocardiac opacity . Otherwise , the lungs appear clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Patchy new opacities in both lower lungs . Differential considerations include pneumonia or atelectasis . Short - term follow - up radiographs may be helpful .