| Figure 5: 45 year old female patient with history of right lower face metastatic melanoma. A: Coronal fat-suppressed post Gad T1WI demonstrates enlargement of right foramen ovale (curved arrow) with thickening and enhancement of the V3 (mandibular) nerve and right cavernous sinus mass (block arrow) due to perineural invasion. Also note diffuse enhancement of the masticator muscles (arrows) due to acute denervation. B: Axial STIR image showing increased T2 signal in the right masticator muscle due to acute denervation. |
