Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest from ___ at 12 :26 is submitted .
    OUTPUT:
    
There has been interval removal of the chest tube with no left pneumothorax is appreciated . However , there is a lobulated contour to the right apex which may reflect a small right apical pneumothorax . This can be better assessed on followup imaging . The lungs demonstrate parenchymal distortion and hyperinflation consistent with underlying emphysema . There are small bilateral effusions . Linear opacities at the left base likely reflect scarring . More focal patchy opacity at the right base is unchanged but raises concern for pneumonia or aspiration , less likely atelectasis given the asymmetry . Clinical correlation is advised . No pulmonary edema . Status post aortic valve replacement with stable postoperative cardiac and mediastinal contours .