Schematic diagram of the arachnoid remodeling by clipping technique. A pituitary macroadenoma pushes arachnoid membrane upward (upper left). Small remnant tumor is hidden behind the evaginated arachnoid membrane (upper right). After arachnoid remodeling by clipping, the remnant tumor is directly accessed and removed (lower left). Anterior view shows direct visualization of the remnant tumor (lower right).