Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show no change in the slightly blunted appearance of the left costophrenic angle laterally which appears to be related to scarring when viewed in conjunction with the lateral view . There is stable minimal biapical pleural thickening and slight uncoiling of the thoracic aorta . The lungs are clear , and the heart and mediastinal contours show no suspicious change compared to the most recent prior study of ___ . Well - corticated calcification projecting inferiorly to the distal left clavicle may be post-traumatic .
    OUTPUT:
    
No pneumonia seen .