Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No PICC or central venous catheter is identified . There has been no significant interval change in the appearance of the chest compared to the prior study performed earlier the same day . Cardiac , mediastinal and hilar contours are unchanged . Streaky bibasilar opacities likely reflect atelectasis . Small bilateral pleural effusions are noted . There is diffuse calcification of the thoracic aorta . No pneumothorax is noted , but assessment of the lung apices is obscured due to the patient 's chin projecting over this area .
    OUTPUT:
    
No PICC identified .