Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . No previous chest examination available for comparison . Patient is mildly rotated to the right accounting for some asymmetric presentation of the chest . No significant cardiac enlargement is present . The thoracic aorta appears moderately generally widened but no local contour abnormalities are seen . Pulmonary vasculature is not congested and there is no evidence of pleural effusion in the lateral pleural sinuses . No pneumothorax can be identified in the apical area . Skeletal structures of the thorax grossly unremarkable .
    OUTPUT:
    
No evidence of advanced pulmonary congestion , pneumothorax , or acute infiltrate on this portable chest examination .