Table 2.
MRI data in the two groups
| Local regions | NPC patients N (%) | ACC patients n (%) |
|---|---|---|
| Parapharyngeal space | 148 (81.3) | 14 (77.8) |
| Internal pterygoid muscle | 47 (25.8) | 6 (33.3) |
| External pterygoid muscle | 20 (11.0) | 5 (27.8) |
| Oropharynx | 15 (8.2) | 4 (22.2) |
| Nasal cavity | 53 (29.1) | 3 (16.7) |
| Skull base | 97 (53.3) | 12 (66.7) |
| Orbit | 13 (7.1) | 3 (16.7) |
| Infratemporal fossa | 9 (4.9) | 3 (16.7) |
| Accessory nasal sinuses | 43 (23.6) | 3 (16.7) |
| Laryngopharynx | 1 (0.5) | 3 (16.7) |
| Cavernous sinus | 25 (13.7) | 7 (33.3) |
| Cerebral parenchyma | 2 (1.1) | 1 (5.6) |
| Lymph node | 119 (64.8) | 2 (11.1) |
NPC: nasopharyngeal carcinoma; NACC: adenoid cystic carcinoma of the nasopharynx; n: number.