Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is somewhat limited by motion overlying soft tissue . The lung volumes are exceedingly low , resulting in crowding of the bronchovascular structures . There is elevation of the apparent right hemidiaphragm with lateralization of the apex , raising the possibility of a subpulmonic effusion . There is no strong evidence for pulmonary edema . Heart is mildly enlarged but unchanged , accounting for differences in technique . The mediastinal and hilar contours are unremarkable . No pneumothorax .
    OUTPUT:
    
1 . Elevation of the apparent right hemidiaphragm raises the possibility of a subpulmonic effusion . 2 . Low lung volumes without strong evidence for pulmonary edema . Repeat examination with full inspiratory effort would be useful .