Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest again show a right chest wall port with the catheter terminating in the superior to mid portion of the SVC . Compared to the prior radiograph , there is slight improvement in the atelectasis at the right base with no new areas of focal opacity concerning for infection . The cardiac and mediastinal contours are normal . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Minimal improvement in right basilar atelectasis with no evidence of pneumonia .