Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Right - sided Port - A - Cath tip appears to terminate within the proximal right atrium . Heart size is mildly enlarged . Mediastinal contours are unchanged . Pulmonary vasculature is normal . Patchy opacity within the left lung base likely reflects atelectasis . No focal consolidation , definite pleural effusion or pneumothorax is seen . Posterior fusion hardware is again noted within the upper thoracic spine .
    OUTPUT:
    
Low lung volumes with probable left basilar atelectasis .