Abstract
Paragangliomas are highly vascularized usually benign neoplasms arising from nerve tissue. Endovascular preoperative embolization is used to facilitate surgery but is often not complete, due to tiny feeding arteries not feasible for selective catheterization. Our purpose was to evaluate angiographic and clinical outcome using Onyx for percutaneous glomus tumor embolization. A consecutive series of 4 patients with 6 paragangliomas located at the bifurcation of the common carotid artery were treated with percutaneous embolization using Onyx as the sole embolic material. Complete devascularization of the 6 paragangliomas was achieved using a percutaneous embolization technique with Onyx as a sole agent, combined with an endovascular microballoon that offered protection of the internal carotid artery. Further documentation is necessary to prove the higher grade of devascularization of paragangliomas with Onyx compared with other embolic material and the associated potential to facilitate surgery. Nevertheless, Onyx seems to be safe when used percutaneously due to its lavalike pattern flow and its controllable properties, allowing slow tumor bed penetration.
Highlights
AND PURPOSE: Paragangliomas are highly vascularized usually benign neoplasms arising from nerve tissue
Further documentation is necessary to prove the higher grade of devascularization of paragangliomas with Onyx compared with other embolic material and the associated potential to facilitate surgery
Onyx seems to be safe when used percutaneously due to its lavalike pattern flow and its controllable properties, allowing slow tumor bed penetration
Summary
A consecutive series of 4 patients with 6 paragangliomas located at the bifurcation of the common carotid artery were treated with percutaneous embolization using Onyx as the sole embolic material. Patients A consecutive series of 4 patients with 6 carotid body paragangliomas was treated with percutaneous embolization by using Onyx as the sole embolic material. The age of the patients ranged between 32 and 67 years with a mean of 44.3 years. The largest tumor was 5.0 cm, with mean diameter of 3.5 cm. None of the patients had neurologic symptoms; none of them demonstrated cranial nerve palsies. All patients noted palpable masses at the neck. In 2 patients, a familial history of glomus tumors was known
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