Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are viewed in comparison with the prior study from ___ . Slightly asymmetric pleural thickening at the lateral apices , left greater than right , appears stable . No additional areas of pleural thickening are seen , and the lungs are clear and well expanded with no nodules or focal consolidation . No pleural effusion is seen . There is some uncoiling of the thoracic aorta , but heart size is within normal limits . Osteophytosis is seen in the lower thoracic spine .
    OUTPUT:
    
Stable left lateral apical pleural thickening for 18 months .