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Fig 3. A, Clinical photograph of the posterior aspect of the neck in an adolescent with a known venous malformation. The arrows in the picture point to the scar from a previous attempt at resection. Note the soft-tissue bulge of the residual venous malformation. B, Percutaneous injection of contrast into the venous malformation performed via an 18-gauge Teflon cannula shows the clustered and dilated venous spaces. The malformation was treated by using 3% STS that was injected after aspiration of the contrast. C, Clinical photograph on a follow-up visit shows complete disappearance of the soft-tissue bulge.
