Intra-operative sclerotherapy for treatment of a head and neck venous malformation.

Venous malformations of the head and neck are congenital lesions that grow steadily without spontaneous regression. We describe the management of a 47-year-old woman with an extensive subcutaneous venous malformation of bilateral submandibular regions and the entire tongue, refractory to multiple surgical excisions and percutaneous sclerotherapy sessions. The tumour lacked prominent feeding arteries for embolisation, but maintained high blood outflow via a few substantial venous branches. Sclerotherapy to the lesion was prevented by major communicating branches from the mass to the internal jugular vein bilaterally. Our approach entailed direct surgical access to the malformation, ligation of these communicating veins and intraoperative sclerotherapy with ethanol injection into the vessel stumps.