Petrous apicitis Classic triad( Gradenigo's syndrome Deep ear and retroorbital pain (irritation of the trigeminal nerve) Aural discharge u Ipsilateral abducent nerve palsyPetrous apicitis ◼ Classic triad (Gradenigo’s syndrome) ◼ Deep ear and retroorbital pain (irritation of the trigeminal nerve) ◼ Aural discharge ◼ Ipsilateral abducents nerve palsy