Table 3.

Relationship between appearance on MRI and cerebral nerveinvasion

Cranial Nerve Lesions Location	NPC		ACC
	Patients n (%)	Paralytic cranial nerves (n)	Patients n (%)	Paralytic cranial nerves (n)
Skull base or extracranial branch
V3 extracranial branch	53 (29.1)	V3 (9)	12 (66.7)	V3 (8)
Pterygopalatina Fossa	35 (19.2)	V2 (8)	7 (38.9)	V2 (5)
Foramen lacerum	17 (9.3)	V2 (7)	3 (16.6)	V2 (3)
Foramen Ovale	44 (24.1)	V3 (9)	9 (50.0%)	V3 (8)
Jugular foramen	9 (4.9%)	IX-XI (0)	2 (11.1%)	IX-XI (0)
Hypoglossal canal	21 (11.5%)	XII (2)	5 (27.7%)	XII (1)
Internal acoustic meatus	0	0	1	VII (1)
Intracranial branch or orbit segment
Superior orbital fissure	3 (1.6%)	III (1)	0	0
		V1 (3)
Inferior orbital fissure	12 (6.6%)	V2 (4)	3 (16.6%)	V2 (1)
Cavernous sinus or Trigeminal ganglion	25 (13.7%)	III (1)	7 (38.9%)	V (8)
		V (10)		VI (2)
		VI (3)

V1 means the first branch of the nerve, V, III and VI mean the fifth, third and sixth cranial nerve.