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Figure 3: Distal radial “snuff box” approach for external carotid artery oral cavity hemorrhage post tumor biopsy. (a) Roadmap post 5-French sheath placement reveals no vasospasm and patent proximal radial artery. (b) Anteroposterior view Simmon 2 Glide catheter is placed over a 035 Glide wire into the right common carotid artery (white arrows) and navigated into the external carotid artery. (c) (Lateral view) Headway Duo microcatheter is placed coaxially through the Simmons 2 Glide catheter and a micro run demonstrates a small neoangiogenic vessel with tumor blush (white arrow), small active extravasation (mouth was packed with gauze) and dissection from the ascending pharyngeal artery. (d) (Lateral view) Onyx 34 (EV3) is injected with good tumor and dissected vessel penetration. (e) (Lateral view) No off-target embolization noted on the post embolization external carotid artery run. The patient had the packing removed the next day

Figure 3: Distal radial “snuff box” approach for external carotid artery oral cavity hemorrhage post tumor biopsy. (a) Roadmap post 5-French sheath placement reveals no vasospasm and patent proximal radial artery. (b) Anteroposterior view Simmon 2 Glide catheter is placed over a 035 Glide wire into the right common carotid artery (white arrows) and navigated into the external carotid artery. (c) (Lateral view) Headway Duo microcatheter is placed coaxially through the Simmons 2 Glide catheter and a micro run demonstrates a small neoangiogenic vessel with tumor blush (white arrow), small active extravasation (mouth was packed with gauze) and dissection from the ascending pharyngeal artery. (d) (Lateral view) Onyx 34 (EV3) is injected with good tumor and dissected vessel penetration. (e) (Lateral view) No off-target embolization noted on the post embolization external carotid artery run. The patient had the packing removed the next day