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Preoperative Embolization of a Cervicodorsal Paraganglioma by Direct Percutaneous Injection of Onyx and Endovascular Delivery of Particles

R.S. Quadrosa, S. Gallasa, C. Delcourta, E. Dehouxb, B. Scherperelc and L. Pierota

a Radiology Department, Hôpital Maison Blanche, Reims, France
b Orthopaedic Department, Hôpital Maison Blanche, Reims, France
c Neurosurgical Department, Hôpital Maison Blanche, Reims, France


Figure 1
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  		Fig 1. T1-weighted sagittal MR image shows a well-defined heterogeneous mass in the posterior cervical area between C6 and T2, with low signal intensity.


Figure 2
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  		Fig 2. T2-weighted sagittal MR image shows a heterogeneous high-intensity mass.


Figure 3
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  		Fig 3. Aortic arch injection reveals a hypervascular mass with enlarged feeding vessels and attenuated homogeneous staining. The mass was mostly fed by branches of the right subclavian artery, especially cervical branches, and muscular branches of the right vertebral artery.


Figure 4
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  		Fig 4. Selective right subclavian angiogram shows the relationship between the tumor and the right vertebral artery.


Figure 5
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  		Fig 5. Aortic arch injection—final control showing a small residual blush.


Figure 6
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  		Fig 6. Final Onyx cast.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X