Middle meningeal vein dural arteriovenous fistula: A report of nine cases and literature review / 第二军医大学学报

ABSTRACT

Objective To summarize the clinical symptoms, imaging features and endovascular treatment outcomes of the middle meningeal vein dural arteriovenous fistula (MMV-DAVF). Methods The data of nine MMV-DAVF patients admitted to our hospital from Jan. 1999 to Apr. 2020 were retrospectively collected. A total of 16 Chinese and English articles, including 23 cases of MMV-DAVF, were retrieved from the database between Jan. 1, 1960 and Aug. 30, 2020. The clinical symptoms, imaging features and endovascular treatment outcomes were analyzed. Results Of the nine MMV-DAVF patients in our hospital, seven patients had a clear history of head trauma. Headache (five cases) and intracranial murmur (five cases) were the most common clinical symptoms. Six patients had computed tomography (CT) data, and four of them had skull fracture and five had intracranial hemorrhage. All the nine patients were drained from the middle meningeal vein (MMV) to adjacent venous sinus or venous plexus. The nine patients were treated with Onyx-18 glue endovascular intervention via middle meningeal artery (MMA) approach, and seven patients had complete embolization immediately after operation and two had subtotal embolization. No recurrence or new onset of DAVF was found in four patients having CT data half a year after operation. Among the 32 patients from our hospital and literatures, 26 patients (81.2%) had a clear history of head trauma, 16 patients (50.0%) suffered from headache, and 12 patients (37.5%) suffered from intracranial murmur. Twenty-five patients had CT data, including 21 patients (84.0%) with skull fracture, 16 patients (64.0%) with intracranial hematoma. Twenty patients (62.5%) were treated with endovascular interventional therapy via MMA approach, and 16 patients (80.0%) had complete embolization immediately after operation. Among them, seven cases had imaging follow-up data half a year after operation, and no recurrence or new onset of DAVF was found. Conclusion MMV-DAVF is rare, and many patients have head trauma history combined with skull fracture or intracranial hematoma. Endovascular embolization via MMA approach is safe and effective in treating MMV-DAVF.