Venous malformation (VM) is the most common type of congenital vascular malformations and consists of malformed veins that do not function properly. Although present at birth, they are not always clinically evident until later in life. VM can occur anywhere in the body but are predominantly located in the head and neck (40%), trunk (20%) and extremities (40%).
Lymphatic Malformation (LM) is a clump of lymph vessels that forms a growing, jumbled, spongy cluster. Lymphatic malformations are unusual growths but they are benign (not cancerous). These malformations are typically apparent at birth or by two years of age. Lymphatic malformations usually slowly grow larger as the patient grows, but on occasion they do get smaller spontaneously. Certain events such as puberty, infection, trauma or bleeding into a lymphatic malformation can cause them to grow rapidly.
Vascular malformations diagnosis
SclerotherapySclerotherapy is a minimally invasive procedure where the doctor injects medicine into abnormal vein or lymph vessels to make the vessel seal itself closed.
Sclerotherapy is performed by an Interventional Radiologist typically under general anaesthesia. Using ultrasound guidance, a needle will be directed into the malformation followed by contrast injection. The contrast will be followed by fluoroscopy (x-ray) to monitor the flow. If the contrast fills out the appropriate portions of the malformation, a special chemical solution (sclerosant) will be injected. This may be repeated depending on the size and distribution of the malformation. The solution irritates the vessel, causing it to swell. This swelling cut off the flow of blood or lymphatic fluid and the vessel shrinks over time.
When to consider sclerotherapy
Sclerotherapy may be done for vascular malformations that:
Types of sclerosant used in the hospital
Risk of sclerotherapy
Most patients are discharged on the same day of the procedure. Patients with an underlying bleeding disorder or those with malformations around the head or neck may require hospital admission following sclerotherapy. Bruising, swelling or firmness at the treatment sites can be expected.
The treatment is usually repeated in 6 to 8 weeks.
The dose you will receive is very small. There is usually no expected side effects from the radiation.
A clinic discussion is recommended for you to have a better understanding of the clinical diagnosis. During this clinic consultation, you will be counselled on various treatment options. Treatment benefits, risks and expectations will be explored and discussed before proceeding any procedure.
Important points to note:
If you are unable to keep to the appointment, please inform us early.
To get a new appointment, please contact:
Angiography SuiteChildren's Tower, Level 2Tel: 6394 8260Fax: 6394 8730
Operation hours:8.00am to 5.30pm (Monday to Friday)
Subscribe to our mailing list to get the updates to your inbox