Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart size is top normal and cardiomediastinal contours are stable . Calcification of the aortic knob is unchanged . Pleural thickening at the right lung base causes mild blunting of the costophrenic angle . No focal consolidation , substantial pleural effusion , or pneumothorax .
    OUTPUT:
    
Unchanged right pleural thickening without effusion .