Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath tip terminates in the mid SVC . Lung volumes are low . Heart size is mildly enlarged . Mediastinal and hilar contours are unchanged with diffuse atherosclerotic calcification of the thoracic aorta again noted . Pulmonary vasculature is normal . Streaky opacity in the left lung base likely reflects atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . Multilevel degenerative changes are noted in the thoracic spine . Known osseous lesions are better assessed on the previous CT scan .
    OUTPUT:
    
Minimal left basilar atelectasis . Known osseous lesions are better assessed on the previous CT exam .