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Axial CT post-contrast soft tissue windows in a patient with adenoid cystic carcinoma (ACC) extending throughout the left nasal cavity, left maxillary sinus and left pterygoid fossa with enlargement and loss of fat in the left pterygopalatine fossa and left infratemporal fossa. Perineural tumour extension is expected along the V2 branches in pterygopalatine fossa, infraorbital nerve and foramen rotundum.
