fig20

Figure 20. AdCC. From left to right: axial precontrast T1, axial T2, and three axial post-contrast T1 images. AdCC demonstrates invasion of the right skull base with sclerosis of the pterygoid and sphenoid bones (white), and perineural invasion involving the PPF, Vidian canal (blue), foramen ovale (yellow), foramen rotundum (green), inferior orbital fissure (orange), superior orbital fissure (red), orbital apex (red), and ventral cavernous sinus (red). AdCC: Adenoid cystic carcinoma; PPF: pterygopalatine fossa.