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 . No previous chest examinations exist in our record available for comparison . Considering portable technique with patient in semi-upright position , the heart size appears normal . There is moderate widening and elongation of the thoracic aorta but no evidence of any local contour abnormalities . The pulmonary vasculature is not congested and there are no signs of pleural effusions in the lateral pleural sinuses . No pneumothorax is identified in the apical area and no discrete local parenchymal infiltrates can be identified .
    OUTPUT:
    
No significant pulmonary or cardiovascular abnormality as can be identified on single view .