Is your baby's skin red and swollen? Let's learn about Klippel-Trenaunay Syndrome (KTS)!

Have you ever noticed that some babies are born with a large red birthmark on one side of their body, especially on an arm or leg, and that arm/leg is slightly larger than the other side? Or sometimes you can see veins on that side? It's normal to feel a little scared when you see something like this. Today we are going to talk about a condition that shows similar symptoms, which is a bit rare, meaning that not everyone develops it, and is congenital. This is called Klippel-Trenaunay Syndrome (KTS) . Don't worry, we will talk about this simply, in a way that you can understand.

What is Klippel-Trenaunay Syndrome (KTS)? Simply put...

Imagine, KTS is a rare condition that comes with our baby when he comes into this world (that is, a congenital condition ). This causes some small changes in the way the baby's soft tissues, bones, and blood vessels develop. One of the main symptoms of this is the appearance of a purple-red birthmark, usually on one of the arms or legs, called a 'port-wine stain' . Often, people with this KTS also have some problems with their lymphatic system . This lymphatic system is an important system that helps keep our body fluids in balance.

There is currently no cure for KTS. However, don't panic. There are many effective treatments to manage symptoms . If the condition is diagnosed and treated as early as possible, such as after the baby is born, the health complications that can occur due to KTS can be greatly reduced.

Some doctors also call the KTS condition CLVM . This is the first letter of four English words.

• C is for Capillaries - these are the tiny blood vessels that connect our veins and arteries.
• L stands for Lymphatic system - This is part of our immune system. It carries a fluid called lymph throughout the body.
• V stands for Veins - these are the blood vessels that carry blood to our heart.
• The letter M stands for Malformation . It means that a part of the body does not develop normally, or that there is a deformity.

KTS is named after two French doctors, Maurice Klippel and Paul Trenaunay, who discovered the condition in 1900. Experts estimate that about 1 in 100,000 people worldwide suffer from the condition. It can affect anyone, regardless of race or gender.

What are the symptoms of KTS? How do you recognize it?

The symptoms of Klippel-Trenaunay Syndrome (KTS) mainly affect the veins, capillaries, soft tissues, bones, and lymph vessels in our body. Let's see how:

1. Capillary Malformation (CM):

This is where the 'port-wine stain' we mentioned earlier occurs. This is caused by the swelling of the capillaries under our skin. These birthmarks can be one of the first signs that you may have KTS. These spots can come in a variety of colors, from light pink to dark purple (wine-red). As you age, these spots can become blister-like, lighter, or darker.

2. Vein Malformation (VM):

Almost everyone with KTS has venous malformations. These can affect the veins that are just above the skin's surface, causing varicose veins in the legs, especially in the groin and thighs. They can also affect the deep veins that run deep inside the body. This can lead to a blood clot in the deep veins (Deep Vein Thrombosis - DVT) . DVT is a dangerous condition.

3. Soft tissue and bone overgrowth:

This is a condition where, from a young age, one arm or leg usually grows larger than the other. Most often, this affects only one arm or leg, and most often only one leg. Sometimes one leg may be longer than the other. This can cause loss of balance, difficulty walking, and limited range of motion.

4. Lymphatic Malformation (LM):

Some people with KTS may have extra lymph vessels in their lymphatic system, or the existing lymph vessels may be abnormally shaped. Because these extra lymph vessels do not work properly, lymphatic fluid can leak , causing swelling in the legs, especially the feet, or problems in the pelvis, bladder, or lower intestines.

What causes KTS? Why does this happen?

Most of the time, KTS is caused by a variation in a gene called PIK3CA . This genetic mutation occurs sporadically, meaning that there is no known cause. It is not inherited from parents . This means that even if neither parent had KTS, a child can develop KTS because of this genetic mutation.

Some people have KTS without this PIK3CA gene mutation. Therefore, researchers believe that KTS may be caused by mutations in several other genes. Research into this is still ongoing.

What are the possible complications of KTS?

KTS can cause various complications. That's why prompt treatment is important. Let's take a look at what those complications are:

• Blood clots: Can occur, especially in deep veins (DVT).
• Cellulitis: This is a bacterial infection that occurs under the skin.
• Fluid accumulation and swelling (Lymphedema): Caused by impaired function of the lymphatic system.
• Internal bleeding: Bleeding can occur in the gastrointestinal (GI) tract, bladder, or female reproductive system.
• Pulmonary embolism: This is a life-threatening condition in which a blood clot that forms in the deep veins breaks loose and blocks an artery in the lungs.

Very rarely, people with KTS may have birth defects in their hands or feet. For example:

• Having extra fingers (Polydactyly)
• Fingers stuck together (Syndactyly)

Does KTS cause pain?

Yes, KTS can be painful.

• Varicose veins can cause itching or pain.
• Problems with blood circulation can cause swelling and pain, especially in the lower legs.
• Excessive growth of an organ, such as a leg, can cause a feeling of heaviness and pain in that leg.

How do doctors diagnose KTS? (Diagnosis)

Doctors first diagnose KTS based on physical signs. KTS is suspected if there are problems in at least two of the three main areas we discussed earlier — capillaries, veins, or limb development. Since many of the symptoms of KTS are visible at birth, it may be possible to diagnose KTS before your baby leaves the hospital.

What tests are used to diagnose KTS?

Depending on the symptoms, the doctor may perform tests such as these to further confirm the condition and determine the extent of the problem:

• CT scans or MRI scans: Look at the condition of soft tissues and bones.
• Magnetic Resonance Angiogram (MR angiogram): This is a specialized MRI test that can clearly see the condition of blood vessels and veins.
• Doppler ultrasound: This helps to see blood flow through veins and arteries.

What are the treatments for KTS?

Treatment for Klippel-Trenaunay Syndrome (KTS) varies depending on the symptoms each person has.. Not everyone is given the same treatment. The main goal of treatment is to control symptoms and reduce the risk of complications. Let's see what the main treatment methods are:

• Blood-thinning medicines / Anticoagulants: For example, medicines like Heparin . These reduce the risk of blood clots in the legs (DVT) and pulmonary embolism.
• Sirolimus: This drug is usually used to stop the body from rejecting a transplanted organ. However, it has also been found to stop vascular malformations from getting worse.
• Compression stockings: These are special types of socks that help blood flow back from the legs to the heart. This can help reduce swelling, pain, and the risk of blood clots.
• Endovenous thermal ablation: This involves using focused beams of energy to seal off the problematic blood vessels from the inside. This is done while the veins are still there. This results in less recovery time and less pain.
• Laser therapy: Focused, strong beams of energy can be used to destroy or remove unwanted tissue. This laser therapy is used to lighten the color of a 'port-wine stain' birthmark.
• Sclerotherapy: In this, a special solution is injected directly into the problematic veins, capillaries, or lymphatic vessels. The vessels then close off. This is a very effective treatment for varicose veins.
• Shoe lifts: If your legs are not the same length, you can put a higher lift on one shoe to correct this. This can also help prevent scoliosis .
• Surgery: Surgery can be done to correct problems with the veins and to equalize the length of the legs. Or, surgery can be done to remove excess fat or tissue to reduce the size of an overgrown arm or leg. Rarely, if an abnormally large toe makes it difficult to put on shoes or walk, the toe may be surgically removed.

Can KTS be prevented?

Unfortunately, because KTS occurs randomly, there is no way to prevent it from developing . However, as mentioned earlier, proper treatment can help people with KTS live a higher quality of life.

What kind of future can someone with KTS expect?

Although there is no cure for KTS, symptoms can be managed. In most cases, people with the condition live a typical lifespan .

However, the outlook for KTS can vary from person to person. It depends on how severe your vascular malformations are. These can get worse over time. Therefore, if you develop GI bleeding, deep vein thrombosis, or pulmonary embolism , you should seek immediate medical attention . Blood clots or excessive bleeding can be fatal.

Regular medical advice and treatment can greatly reduce the risk of complications.

If I have KTS, how do I take care of myself? / How do I take care of my child?

If you or your child has KTS, be aware of these things:

• Take good care of your skin: It is important to prevent infections.
• Hormonal birth control methods that contain estrogen are generally not recommended: They can increase the risk of blood clots. Talk to your doctor about this.
• Take medication to prevent blood clots during pregnancy: Your doctor will advise you on this.
• Take blood-thinning medications before surgery: Reduce the risk of blood clots.

When should I see the doctor?

See your doctor at regular intervals throughout your life for checkups . This will allow your doctor to monitor your condition and treat any new problems that may arise. Regular checkups will help your doctor see how well your treatment is working and make changes to your treatment plan if necessary.

When should I go to the Emergency Treatment Unit (ETU) ?

If you think you have a blood clot (e.g., DVT, Pulmonary Embolism symptoms) or if you are bleeding heavily (heavy bleeding), you should go to the emergency room immediately.

What are the important questions to ask the doctor?

If you or your child has KTS, you may want to ask your doctor questions like:

• What treatments are best for me/my child?
• How often should I come for checkups?
• Given my current situation, what can you say about my future (prognosis/outlook)?

Is KTS life-threatening?

KTS itself does not directly affect life expectancy. However, some complications that can occur due to KTS, such as internal bleeding or pulmonary embolism, can be life-threatening . Regular treatment for these risk factors can reduce the risk of complications.

Is KTS a disability?

It can happen. If you are unable to work due to complications of KTS, such as deep vein thrombosis (DVT) or pulmonary embolism, you may be eligible for disability benefits. You may also be eligible for benefits such as a disability parking tag for problems such as walking difficulties due to enlarged limbs.

It can be difficult to understand all the symptoms and complications of KTS at once. However, your doctor can explain them all to you and help you treat your problems. Don't be afraid to keep your doctor informed about how you're feeling and any new symptoms you're experiencing . Talking openly like this will make it easier to ask for help if you have any problems.

What we want to take home from this story (Take-Home Message)

Okay, so we've talked a lot about KTS, haven't we? Here are a few things to keep in mind:

• KTS is a rare, congenital condition . So don't worry, you're not alone.
• The main symptoms are a 'port-wine stain' birthmark, an enlarged arm/leg, and vein problems .
• Although there is no complete cure for this, there are very good treatments to control the symptoms .
• It is very important to diagnose the disease and start treatment as soon as possible .
• It is essential to receive constant medical supervision and necessary treatment throughout life.
• Maintain good communication with your doctor. Ask any questions you have, and tell them how you feel.

I hope this information has helped you gain a better understanding of KTS. If you or someone you know has these symptoms, it is best to seek medical advice.

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