Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post open reduction internal fixation of the left humeral head . The study is not tailored to assess the fixation . Low bilateral lung volumes with patchy airspace opacities bilaterally , predominantly involving the right lung and may reflect asymmetric pulmonary edema . Unchanged left apical pleural parenchymal thickening . No pneumothorax identified . The size of the cardiomediastinal silhouette is enlarged but may be secondary to low lung volumes .
    OUTPUT:
    
Low lung volumes with diffuse bilateral patchy airspace opacities predominantly involving the right lung which may reflect asymmetric pulmonary edema .