Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The patient is rotated slightly to the right . There is opacification of most of the right hemithorax with volume loss seen , possibly underlying fluid ; underlying consolidation is not excluded . Correlate with history of prior procedure to the right hemithorax . There is a trace left pleural effusion . The right aspect of the cardiomediastinal silhouette is not well assessed due to the right hemithorax opacity , although the left aspect of the cardiomediastinal silhouette is unremarkable . The left hilum is slightly prominent , which may be due to pulmonary vascular engorgement . Single - lead left - sided pacemaker , with lead extending to the expected position of the right ventricle .
    OUTPUT:
    
Near - complete opacification of the right hemithorax with small area of aeration in the right upper to mid lung with volume loss and shift of the mediastinum to the right , query previous procedure on the right hemithorax . There is likely underlying pleural fluid , underlying consolidation not excluded .