Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pectoral infusion port terminates in upper SVC . Sternotomy wires are intact . Lung volume is low . Mild bibasilar opacities likely reflect atelectasis . Calcification at the AP window likely reflect calcified lymph nodes in a unchanged from before . There is no large pleural effusion or pneumothorax . Mild cardiomegaly is similar to before .
    OUTPUT:
    
No convincing radiographic evidence for pneumonia is identified . Mild bibasilar opacities are likely atelectasis .