Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . The aorta is tortuous and calcified at the aortic knob , unchanged . The pulmonary vascularity is not engorged . Apart from mild atelectasis in the lung bases , no focal consolidation , pleural effusion or pneumothorax is seen . Calcified nodule within the left mid lung field measuring 9 mm is stable , and correlates to a calcified pleural plaque seen on CT torso ___ . No acute osseous abnormalities seen . No pneumothorax is present .
    OUTPUT:
    
Mild bibasilar atelectasis .