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  • Title: Ethanol embolization of lingual arteriovenous malformations: Positive experience in 52 patients during 11 years.
    Author: Zheng L, Su L, Wang D, Wang Z, Wen M, Yang X, Han Y, Li X, Fan X, Tao X.
    Journal: J Vasc Surg; 2020 Aug; 72(2):651-657.e4. PubMed ID: 31882310.
    Abstract:
    OBJECTIVE: Lingual arteriovenous malformations (AVMs) are extremely rare in clinical practice, which has limited comprehensive research to find standard treatment protocols. This study summarizes the clinical features of lingual AVMs and assesses the safety and efficacy of ethanol embolotherapy in the management of these lesions. METHODS: Our study group was composed of 52 patients with lingual AVMs treated by ethanol embolization, all of whom received general anesthesia. The optimal access to the nidus of the AVM was by direct puncture, transarterial catheterization, transvenous catheterization, and a combination of these routes. Pure ethanol was manually injected into the nidus of the AVMs. The observed major or minor complications related to ethanol embolization were analyzed, and periodic follow-up of the patients was performed. The devascularization of the lingual AVMs between baseline and final angiography and the clinical outcomes of symptoms and signs after ethanol embolization were evaluated. RESULTS: There were 171 embolization procedures (mean, 3.3; range, 1-20) including 166 ethanol embolizations performed; the average volume of ethanol injected in a single ethanol embolization session was 29.8 mL (range, 1-65 mL). Therapeutic outcomes were complete response in 17 patients (33%), partial response in 33 patients (63%), and no response in 2 patients (4%). The effective therapeutic outcomes were gained in 96% of the patients with lingual AVMs treated with ethanol embolization; 25 (48%) of the patients had 83 complications, which were necrosis, infection, hemorrhage of the puncture point, transient hemoglobinuria, postoperative irritability, airway constriction, and coil migration, occurring in 78 procedures (46%). Regular follow-up of all the patients was performed, with the average follow-up period of 37.9 months (range, 1-125 months) after the last treatment. CONCLUSIONS: Ethanol embolization of lingual AVMs is safe and efficacious and is recommended to be the potential preferred method in the treatment of these complicated lesions.
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