Cryoablation of low-flow vascular malformations

Area of Science:

• Interventional Radiology
• Vascular Surgery
• Dermatology

Background:

• Low-flow vascular malformations, including venous malformations (VM) and fibroadipose vascular anomalies (FAVA), can cause significant symptoms.
• Current treatment options may have limitations, necessitating evaluation of alternative therapies.

Purpose of the Study:

• To assess the safety and efficacy of cryoablation for treating low-flow vascular malformations.
• To evaluate cryoablation as a primary treatment or an adjunct to sclerotherapy.

Main Methods:

• Retrospective review of 11 patients (14 lesions) with VM or FAVA treated with cryoablation.
• Technical success defined by ice ball coverage of symptomatic malformation area.
• Clinical success categorized as complete symptom resolution or partial improvement.

Main Results:

• 100% technical success rate for cryoablation.
• High rates of clinical success: 93% complete response at 1 month and 92% at 6 months.
• Only minor complications (skin blisters, transient numbness) observed, resolving with conservative management.

Conclusions:

• Cryoablation is a safe and effective therapeutic option for low-flow vascular malformations.
• It can be utilized as a primary treatment modality or following prior sclerotherapy.
• The procedure offers significant symptomatic improvement with a favorable safety profile.