Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right chest wall Port - A - Cath terminates in the low SVC . Lung volumes are normal . There is minimal bibasilar atelectasis , less likely pneumonia . The heart is not enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild bibasilar atelectasis , less likely pneumonia .