Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . There is mild - to - moderate relative elevation of the right hemidiaphragm . The cardiac , mediastinal and hilar contours appear unchanged . A mild interstitial abnormality suggests slight fluid overload . Patchy opacity with a shifting distribution lies within the right cardiophrenic angle , suggesting persistent minor atelectasis . The left costophrenic sulcus is excluded . However , there is no definite evidence for pleural effusion or pneumothorax .
    OUTPUT:
    
Findings which suggest mild fluid overload .