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InVesalius three-dimensional (3-D) software filters applied to the computed tomography (CT) scan shows the extent of local invasion of the chordoma arising from the clivus. Soft tissues (light blue), in contrast to the tumor (red) and bone structure (dark blue), allows visualization of the swollen area of the cheek caused by the invasion of the tumor into the right zygomatic arch, maxilla, maxillary sinus, and masticator space.
