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  • Title: Is There a Safe and Effective Way to Treat Trigeminal Neuralgia Associated with Vertebrobasilar Dolichoectasia? Presentation of 8 Cases and Literature Review.
    Author: Vanaclocha V, Herrera JM, Martínez-Gómez D, Rivera-Paz M, Calabuig-Bayo C, Vanaclocha L.
    Journal: World Neurosurg; 2016 Dec; 96():516-529. PubMed ID: 27586175.
    Abstract:
    OBJECTIVE: Surgical treatment of trigeminal neuralgia (TN) associated with vertebrobasilar dolichoectasia is challenging. We analyze the treatments for this disease, discussing the advantages and drawbacks, and present our own technique and series. METHODS: This retrospective study covered the period January 2006 through January 2016. Vertebrobasilar dolichoectasia deviation from midline, basilar artery (BA) and vertebral artery diameter, and BA apex distance above the posterior clinoid process were measured on preoperative and postoperative magnetic resonance imaging. The BA was repositioned and kept in place with coagulation of the clival dura, Teflon pledgets, and fibrin glue. We also performed a thorough literature review using PubMed. RESULTS: Our cases included 5 men and 3 women with mean age 64.88 years ± 10.32 (range, 48-81 years); 7 cases were TN, and 1 case was painful tic convulsif. Pain was on the left side in 6 cases and on the right in 2 cases. All cases affected cranial nerve V2 and/or V3 divisions. Both V2 and V3 were affected in 4 cases, V3 was affected in 3 cases, and V2 was affected in 1 case. Hypertension was present in 5 cases. TN disappeared postoperatively in all cases. One patient took clonazepam 2 mg/24 hours for 3 months because of facial dysesthesia. Postoperative complications included hearing loss in 1 patient; facial paresis plus diplopia in 1 patient, which resolved in 3 months; and arterial hypertension. Postoperative arterial hypertension improved in all affected patients, although only 2 patients discontinued antihypertensive medications. Mean follow-up time was 56.50 months ± 40.08 (range, 14 months to 9 years 9 months). No patient showed pain recurrence. CONCLUSIONS: TN associated with vertebrobasilar dolichoectasia can be treated surgically with minimal morbidity. BA repositioning has the highest success rate. Our technique of inducing a dural scar to fix the BA in its new position away from the trigeminal nerve is simple, not technically demanding, and highly effective.
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