Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left chest wall Port - A - Cath tip terminates at the cavoatrial junction . There is no evidence of pneumothorax . Low lung volumes with mild right basal atelectasis is seen . No pleural effusion is identified . The cardiomediastinal and hilar contours are normal .
    OUTPUT:
    
Left chest wall Port - A - Cath terminates at the cavoatrial junction . No pneumothorax .