Endovascular treatment of head and neck arteriovenous malformations.
BACKGROUND
Head and neck arteriovenous malformations (H&N AVM) are associated with considerable clinical and psychosocial burden and present a significant treatment challenge. We evaluated the presentation, response to treatment, and outcome of patients with H&N AVMs treated by endovascular means at our institution.


METHODS
Patients with H&N AVMs treated by endovascular means from 1984 to 2012 were evaluated retrospectively. These included AVMs involving the scalp, orbit, maxillofacial, and upper neck localizations. Patient's clinical files, radiological images, catheter angiograms, and surgical reports were reviewed.


RESULTS
Eighty-nine patients with H&N AVMs (46 females, 43 males; 48 small, 41 large) received endovascular therapy. The goals of treatment were curative (n = 30), palliative (n = 34), or presurgical (n = 25). The total number of endovascular treatment sessions was 244 (average of 1.5 per patient). The goal of treatment was met in 92.1 % of cases. Eventual cure was achieved in 42 patients accounting for 58.4 % (52/89) of all patients who underwent treatment for any goal. Twenty-eight of these patients were cured by embolization alone (28/89, 31.4 %) of which 18 were single-hole AVFs. Twenty-four were cured by planned surgical excision after presurgical embolization (24/89, 27 %). Seven patients (7/89, 7.2 %) suffered transient and two (2/89, 2.2 %) permanent endovascular treatment complications.


CONCLUSIONS
Endovascular treatment is effective for H&N AVMs and relatively safe. It is particularly effective for symptom palliation and presurgical aid. Embolization is curative mostly in small lesions and single-hole fistulas. In patients with large non-curable H&N AVMs, endovascular therapy is often the only palliative option.
Joint Department of Medical Imaging, University Health Network, Toronto, Ontario, Canada.
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D000293:Adolescent; D000328:Adult; D000368:Aged; D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging* / Q000628:therapy*; D002533:Cerebral Angiography / Q000379:methods*; D057510:Endovascular Procedures / Q000379:methods*; D005260:Female; D006257:Head / Q000002:abnormalities / Q000098:blood supply*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000002:abnormalities / Q000098:blood supply*; D015641:Radiography, Interventional / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult