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Introduction Cribriform plate arteriovenous fistulas (AVFs) are rare vascular anomalies associated with headaches, pulsatile tinnitus and anosmia. Patients frequently report history of head trauma. Limited data exist on their optimal management. This case series evaluates the efficacy of transvenous embolization for durable fistula occlusion.Abstract C81 Figure 1Case Description Three patients (females, aged 52, 63 and 68) with unruptured cribriform plate AVF were included in this review. 2/3 patients had a history of head treauma. 2/3 patients presented with nonspecific headache, 1/3 patient had a seizure one year after traumatic event. Digital subtraction angiography (DSA) confirmed cribriform plate AVFs fed by ethmoidal arteries and drained via anterior cranial fossa veins, mainly into superior sagittal sinus (SST). Transarterial route did not allow to reach fistula point in one patient, followed with successful transvenous approach. Other patients were primarly treated with transvenous embolization via the SST, using pressure cooker technique – detachable coils trapping microcatheter followed by Onyx 18 injection to occlude the fistulous point. All procedures were completed without complications. Post-procedural DSA demonstrated complete fistula obliteration in one case with other two scheduled for follow-up later. Patients noted symptom resolution the following day in all cases.Conclusions Transvenous embolization using coils and Onyx18 system is safe and effective treatment for cribriform plate AVFs, achieving durable occlusion and symptom resolution. This approach minimizes the risk of occluding central retinal artery, as well as ciliary arteries, while addressing the unique anatomic challenges of this region. In our opinion early intervention is critical for symptom resolution and avoidance of further complications.Abstract C81 Figure 2Conflict of Interest No