Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . In the interval , there has been near complete collapse of the right middle and lower lobes . Volume loss in the right lower lung is present with mild rightward shift of midline structures . No definite signs of pneumonia . Right heart border is effaced partially limiting assessment . The mediastinal contour is likely normal allowing for slight rotation . Bony structures intact . Mild levoscoliosis of the lumbar spine noted .
    OUTPUT:
    
Near - complete collapse of the right middle and lower lobes .