Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Calcified pleural plaque is noted bilaterally likely reflecting prior asbestos exposure as seen on prior CT chest . Overall appearance is unchanged . No definite evidence for a superimposed pneumonia . No large effusion or pneumothorax . Cardiomediastinal silhouette appears grossly unchanged with atherosclerotic calcification along the aortic knob . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Calcified pleural plaque . No signs of a superimposed acute process .