Chronic subdural hematoma (CSDH) is a frequent condition in neurosurgical practice. Primary
surgical evacuation (Burr-hole drainage) remained the treatment’s gold standard despite the
progress of several endovascular alternatives [1]. CSHD recurrence is observed in more than 15%
of operated cases. Surgical rescue is needed in most of these situations [2,3].
Middle meningeal artery embolization (MMAE) is a recent minimally invasive approach in CSHD
management. Several embolization agents and protocols used in this technique were associated
with lower short-term CSHD recurrence rates and shorter hospital stay [4].
MMAE was initially indicated for intractable refractory CSDH cases. Recently, MMAE indications were
extended to several other clinical situations specially in elderly patients, concomitant anticoagulation
treatments and in case of septic or metastatic CSHD [5,6]. MMAE modalities and techniques are still
heterogeneous and non-consensual. The use of embolic materials reaching more distally was
correlated with lower recurrence rate. Some authors are considering liquid MMA embolization agents
as safer and more effective [7].
Associated to surgery, MMAE significantly decreases surgical treatment failure rate and the need for
second rescue with acceptable added morbidity and mortality [8]. Over the last few years MMAE is
proving to be a safe non-invasive treatment option with favorable outcomes and lower recurrence
rate [8].Standalone MMAE may be equivalent to MMAE and surgery association regarding recurrence
rate, surgical rescue and inpatient hospital stay [9] . Several studies have revealed that MMAE may
stop the neovascularization process which is the main cause of traumatic CSHD recurrence [10].
Furthermore, MMAE is safer and more effective in the management of CSHD for patient with
malignant coagulopathies [11]. MMAE is a promising alternative to surgery in appropriately selected
CSHD cases. However, evidence-based assessment of long-term efficacy, durability and exact patient
centered indications is needed before considering this endovascular approach as a viable definitive
treatment of CSHD [12].
References
[1]Ng S, Derraz I, Boetto J, Dargazanli C, Poulen G, Gascou G, et al. Middle meningeal artery embolization as an adjuvant treatment to surgery for symptomatic chronic subdural hematoma: a pilot study assessing
hematoma volume resorption. J Neurointerv Surg. 2020;12(7):695-99.
[2]Musmar B, Spellicy S, Salim H, Abdelgadir J, Zomorodi A, Cutler A, et al. Comparative outcomes of middle meningeal artery embolization with statins versus embolization alone in the treatment of chronic
subdural hematoma: a systematic review and meta-analysis. Neurosurg Rev. 2023; 46:262.
[3]Sattari SA, Yang W, Shahbandi A, Feghali J, Lee RP, Xu R, et al. Middle meningeal artery embolization versus conventional management for patients with chronic subdural hematoma: A systematic review and
meta-analysis. Neurosurgery. 2023;92:1142-54.
[4]Srivatsan A, Mohanty A, Nascimento FA, Hafeez MU, Srinivasan VM, Thomas A, et al. Middle meningeal artery embolization for chronic subdural hematoma: Meta-analysis and systematic review. World
Neurosurg. 2019;122:613-19.
[5]Abdollahifard S, Farrokhi A, Yousefi O, Valibeygi A, Azami P, Mowla A. Particle embolic agents for embolization of middle meningeal artery in the treatment of chronic subdural hematoma: A systematic review
and meta-analysis. Interv Neuroradiol. 2024;30:94-104.
[6]Ku JC, Dmytriw AA, Essibayi MA, Banihashemi MA, Vranic JE, Ghozy S, et al. Embolic agent choice in middle meningeal artery embolization as primary or adjunct treatment for chronic subdural hematoma: A
systematic review and meta-analysis. AJNR Am J Neuroradiol. 2023;44:297-302.
[7]Mowla A, Abdollahifard S, Farrokhi A, Yousefi O, Valibeygi A, Azami P. Middle meningeal artery embolization with liquid embolic agents for chronic subdural hematoma: A systematic review and Meta-analysis.
J Vasc Interv Radiol. 2023 ;34:1493-1500.e7.
[8]Chen H, Colasurdo M, Kan PT. Middle meningeal artery embolization as standalone treatment versus combined with surgical evacuation for chronic subdural hematomas: systematic review and meta-analysis.
J Neurosurg. 2023; 140:819-25.
[9]Jumah F, Osama M, Islim AI, Jumah A, Patra DP, Kosty J,et al. Efficacy and safety of middle meningeal artery embolization in the management of refractory or chronic subdural hematomas: a systematic
review and meta-analysis. Acta Neurochir (Wien). 2020; 162:499-507.
[10]Henry J, Amoo M, Kissner M, Deane T, Zilani G, Crockett MT, et al. Management of chronic subdural hematoma: A systematic review and component network meta-analysis of 455 Studies With 103 645
Cases. Neurosurgery. 2022;91:842-55.
[11]Kojima A, Hosoi M, Hayashi K, Fukumura M, Saga I. Middle meningeal artery embolization for refractory chronic subdural hematoma associated with acute myeloid Leukemia: A Case Report. J Neuroendovasc
Ther.2024;18:47-52.
[12]Ironside N, Nguyen C, Do Q, Ugiliweneza B, Chen CJ, Sieg EP, et al. Middle meningeal artery embolization for chronic subdural hematoma: a systematic review and meta-analysis. J Neurointerv Surg.2021
;13:951-57.