Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly better expanded . However , there is residual subsegmental atelectasis in the right middle lobe and to a lesser extent in the lingula . No consolidation or edema is evident . The mediastinum is unremarkable . The cardiac silhouette is within normal limits for size . No effusion or pneumothorax is noted . The osseous structures are osteopenic , but otherwise unremarkable . A presumed ventriculoperitoneal shunt again is identified traversing over the right hemithorax . An indwelling internal fixation hardware of the left humerus is incompletely evaluated .
    OUTPUT:
    
Slightly better depth of inspiration , however , with residual discoid atelectasis as above . No focal consolidation or superimposed edema noted .