ArticleClinical neuroradiology2026
Thalamic Arteriovenous Malformations: Clinical Presentation, Angio-Architecture and Therapeutic Management: Retrospective Analysis of a Single Center Experience in 22 Patients.
Article in Clinical neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeAssess the prevalence of thalamic AVM (tAVMs), their revealing conditions and angio-architectural features, as well as their therapeutic management.
methodsMonocentric retrospective study (1998 to 2018) involving 748 consecutive patients with a brain AVM managed at the Pitié-Salpêtrière Hospital, from which tAVMs were retrieved. Revealing condition of the tAVMs was recorded. tAVMs' angio-architecture was systematically reviewed on angiographic examinations. The safety and effectiveness of treatments (conservative management and exclusion treatment) were evaluated based on clinical and angiographic criteria.
resultsTwenty-two consecutive patients (9 males, mean age: 32 ± 14 years) with a tAVM were included (prevalence: 2.9%). tAVMs were revealed by a bleeding event in 86.4% of cases. The posterolateral choroidal artery was the most frequently observed arterial feeder in our series (71.4%). Associated aneurysm (nidal and/or pedicular) was observed in 36.4% of patients. The tAVMs' mean volume was 6.45 ± 12.8 ml. Venous drainage was in the deep venous system only in most cases (81%). Four patients received conservative management, 12 patients were treated by radiosurgery and 12 by embolization, with 6 patients (27.2%) who received both embolization and radiosurgery. Complete nidal occlusion was achieved in 33.3% of the patients who underwent angiographic follow-up. Two embolized patients (16.7%) suffered severe embolization-related complications, and 4 patients treated with radiosurgery (33.3%) suffered severe procedure related complication, all of which resolved without significant sequela.
conclusionOur results underline the safety of exclusion treatments by embolization and/or radiosurgery of tAVMs. Efficacy in terms of angiographic exclusion still needs to be demonstrated at long-term due to limited imaging follow-up.
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