Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the right chest tube with no appreciable pneumothorax . Lung volumes are persistently low with bibasilar atelectasis and small right effusion . A substantial abnormal opacification is present in the lower lung posteriorly on lateral view without a clear frontal correlate which may represent a hematoma .
    OUTPUT:
    
1 . Interval removal of right chest tube without appreciable pneumothorax . 2 . Substantial abnormality in the posterior lower lung on lateral view without clear frontal correlate . Bilateral oblique chest radiograph is recommended for localization and further characterization .