Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath device is noted with the tip terminating in the SVC . Heart size is normal . Aorta is tortuous and diffusely calcified . Mediastinal and hilar contours are otherwise unchanged . Linear bibasilar airspace opacities likely reflect atelectasis . No pleural effusion or pneumothorax is clearly noted . There is no pulmonary vascular congestion . Known lytic lucencies involving the thoracic osseous structures is better delineated on the previous CT including vertebra plana of the T4 vertebral body .
    OUTPUT:
    
Bibasilar linear atelectasis . Known osseous lesions are better assessed on the recent CT including T4 vertebra plana .