Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral calcified pleural plaques are again noted , which slightly limit assessment of the underlying pulmonary parenchyma . There are minimal streaky opacities in the lung bases possibly reflective of atelectasis . No pleural effusion or pneumothorax is seen . The cardiac , mediastinal and hilar contours are unchanged , with the heart size appearing top normal . No pulmonary vascular congestion is present . The aorta remains tortuous at tortuous . No acute osseous abnormalities are demonstrated .
    OUTPUT:
    
Bilateral calcified pleural plaques compatible with prior asbestos exposure . Patchy opacities in the lung bases , possibly atelectasis .