Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable upright chest radiograph was provided . The images are underpenetrated so detection of pulmonary edema is limited . Streaky opacities at the bases may represent atelectasis . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is unchanged allowing for differences in technique . The bones are intact . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
Limited study due to underpenetration . No overt pneumonia or failure .