Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . Mild elevation of the right hemidiaphragm may be due to the presence of a small subpulmonic pleural effusion . Thoracic spinal fusion hardware is again noted along with interbody graft device in the mid thoracic spine .
    OUTPUT:
    
Elevated right hemidiaphragmatic contour may be due to the presence of a small subpulmonic effusion .