New embolization method using estrogen for dural arteriovenous malformation and meningioma

Area of Science:

• Vascular Surgery
• Neurosurgery
• Endovascular Therapy

Background:

• Dural arteriovenous malformations (DAVMs) and meningiomas pose significant clinical challenges.
• Current treatment options for DAVMs and meningiomas may involve invasive surgical procedures with associated risks.
• Minimally invasive therapeutic approaches are continuously being explored to improve patient outcomes.

Purpose of the Study:

• To evaluate the efficacy of continuous infusion of conjugated estrogens for treating dural arteriovenous malformations.
• To assess the utility of this method in pre-operative embolization of meningiomas to reduce intraoperative bleeding.
• To describe the histological changes in meningiomas following this therapeutic intervention.

Main Methods:

• Conjugated estrogens were administered via continuous infusion through a cannula placed in the external carotid artery.
• The treatment was applied to patients diagnosed with dural arteriovenous malformations.
• The same technique was utilized for pre-operative embolization in patients with meningiomas.

Main Results:

• Therapeutic effects, including complete or partial nidus disappearance, were observed in 6 out of 8 patients with DAVMs.
• In 3 patients with meningiomas, the method successfully reduced bleeding during surgical extirpation.
• Histological examination of the resected meningiomas provided insights into treatment-induced changes.

Conclusions:

• Continuous infusion of conjugated estrogens through the external carotid artery is a potentially effective treatment for DAVMs.
• This method shows promise as an adjunct therapy for meningioma surgery, aiding in blood loss reduction.
• Further research into the histological effects and long-term outcomes is warranted.