From the case:
Cavernous sinus (diagram)
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- O (superior) - Oculomotor nerve (CN III)
- T - Trochlear nerve (CN IV)
- O (inferior) - Ophthalmic branch of trigeminal nerve (V1 - CN V)
- M - Maxillary branch of trigeminal nerve (V2 - CN V)
- C - Internal carotid artery (ICA)
- A - Abducens nerve (CN VI)
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