You will be anaesthetised for the procedure. The interventional radiologist may take one of two approaches to perform the sclerotherapy. The first possible way to carry out the procedure is by inserting catheters into a blood vessel and then injecting a solution of 90% alcohol into the affected vein, causing the vein to become blocked. This is known as an endovascular approach.
The other way in which the interventional radiologist may perform the procedure is a percutaneous approach. For this approach, the interventional radiologist directly injects the solution into the selected vessel or vessels, usually guided by sonography.
Recently, other minimally invasive alternatives have been used as alternatives for patients undergoing sclerotherapy, such as laser or cryoablation.