Treatment of venous malformations with tumescent-assisted sclero-embolic and ablative lasers (SEALs): Safe and effective long-term outcomes

Abstract

Background

Perivascular infiltration of tumescent anaesthesia (TA) is an essential element of endovenous thermal ablative procedures employed to treat superficial venous disease. In addition to anaesthesia, TA is administered to achieve vessel wall approximation and to protect surrounding structures from thermal damage. However, its role in the treatment of venous malformations (VMs) has not been established.

Objectives

To assess the safety and efficacy of tumescent-assisted thermal and chemical ablative methods in the treatment of VMs.

Methods

Adult and paediatric patients presenting with VMs were treated using a combination of endovenous laser ablation, foam embolo-sclerotherapy and liquid embolisation using n-BCA. All procedures were ultrasound-guided. Treatment outcomes were assessed in early and late follow-ups. To assess the efficacy of TA in achieving vessel wall approximation, cross-sectional lesional diameters were measured by ultrasound, before and after the administration of TA during endovenous procedures.

Results

In a 12 month period, 22 patients recruited in the study presented with 27 VMs which included 23 extra-truncular lesions (16 subcutaneous and seven intramuscular) and four truncular anomalies. On average the subcutaneous lesions measured 5.5 mm (1.9–24.5 mm) in diameter, intramuscular lesions measured 9.2 mm (5.9–15.1 mm) and truncular anomalies measured 4.9 mm (1.2–12 mm) in diameter. Perivascular infiltration of TA resulted in a significant reduction in vessel calibre (90% reduction on average). Intramuscular VMs were less compressible with TA (69.2% reduction) compared to subcutaneous lesions (98% reduction). Truncular anomalies such as the embryonic marginal vein achieved complete approximation (100% reduction). Procedures were safely tolerated with no major complications such as thromboembolism, stroke, nerve damage or tissue necrosis. Most patients had significant clinical as well as ultrasonographic improvement.

Conclusion

Tumescent-assisted endovenous laser ablation and foam sclerotherapy provides safe and effective outcomes in patients with a variety of VMs.

Keywords

duplex ultrasound embolo-sclerotherapy endovenous laser treatment ultrasound-guided sclerotherapy venous malformation

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