Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP semi-upright portable chest radiograph obtained . Right CP angle is excluded . A right chest tube is again noted with its tip extending along the right mediastinal border extending superiorly . There is mild left basilar atelectasis . No pneumothorax is seen . The right paratracheal stripe appears thickened up to 2 .5 cm , new from prior exam , of unclear etiology . Subcutaneous gas is noted in the right supraclavicular region , possibly related to the right chest tube .
    OUTPUT:
    
Right chest tube in place , positioned as described . Subcutaneous gas in the right supraclavicular region likely related to chest tube . Prominence of the mediastinum can be exaggerated due to portable technique , though right paratracheal thickening is of unclear etiology . Please correlate clinically . Left basilar atelectasis noted .