Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of the right hemidiaphragm is chronic . A disconnected right VP shunt catheter is noted projecting over the right chest wall . The heart size is normal and the mediastinal and hilar contours are unremarkable . Except for subsegmental lingular atelectasis , the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities .
    OUTPUT:
    
Subsegmental lingular atelectasis . Chronic elevation of the right hemidiaphragm .