Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright frontal view of the chest . The left lung is clear . Opacity in the right lung base most likely represents atelectasis or overlapping soft tissues ; however , underlying consolidation or focal pulmonary edema can not be excluded . The cardiac and mediastinal contours are normal . Cervical spine hardware is seen .
    OUTPUT:
    
Opacity over the right lower lung zone most likely represents atelectasis however infection or focal pulmonary edmea is not excluded . Further evaluation with deeper inspiration could be obtained if there is continued clinical concern for pneumonia or congestive heart failure .