Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Bilaterally , the diaphragmatic contours remain visible and there is no evidence of any significant pleural effusion blunting either right or left - sided lateral pleural sinus . No new parenchymal abnormalities are seen . In comparison with the next previous study of ___ , the on frontal view markedly prominent contours of the aneurysmatic descending aorta are poorly seen on this image . Contact via telephone with referring physician ___ . ___ ___ that the patient had not been operated for the aneurysm during the examination interval .
    OUTPUT:
    
No new pulmonary abnormalities that explain the left - sided basal poor breath sounds . No pneumothorax .