Fig. 6
From: Easily detected signs of perineural tumour spread in head and neck cancer
Axial T1-weighted image (a) shows obliteration of the fatty bone marrow in the left mandible (arrow in a). The axial CT image (b) of the same patient reveals obliteration of the fat pad at the mandibular foramen (long arrow in b), compared to the normal fat pad on the right (short arrow in b). These signs are indicative of PTNS along V3 in this patient with history of gingival cancer and V3 numbness