Fig. 6
From: Cross-sectional imaging in cancers of the head and neck: how we review and report
Patient with adenoid cystic carcinoma and perineural extension along the inferior orbital nerve, the pteryopalatine fossa and the maxillary nerve on the left side. Contrast enhanced CT images a, b showing the asymmetric thickened enhancing nerve (arrows) on the left. The curved arrow a shows the normal fat density of the pterygopalatine fossa on the right side. Axial T1-weighted images d, e showing the thickened enhancing nerve (arrows) on the left. Coronal T1-weighted images with fat saturation after injection of gadolinium c showing asymmetrical nerve enhancement (arrow) in the cavernous sinus and f the thickened infraorbital nerve on the left (arrow)