Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right sided VP shunt coursing over the right hemithorax . There are relatively low lung volumes . Right middle lobe atelectasis / scarring is seen . No definite focal consolidation . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable and unremarkable .
    OUTPUT:
    
Right middle lobe atelectasis / scarring .