Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided Port - A - Cath tip terminates in the lower SVC . Heart size is normal . Mediastinal and hilar contours are unchanged , with mild calcification of the thoracic aorta again noted . Mildly increased interstitial markings are noted diffusely , which could reflect mild pulmonary vascular engorgement . Known bilateral pulmonary nodules are better demonstrated on the prior chest CTA . Streaky bibasilar atelectasis is noted . There is no pleural effusion or pneumothorax . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild bibasilar atelectasis . Probable mild pulmonary vascular congestion . Known bilateral pulmonary nodules better assessed on previous CT .