Does your chest feel like it's filling with water? It could be chylothorax!

Do you sometimes suddenly find it difficult to breathe? Or do you feel something heavy or tight inside your chest? There may be a reason for this that you don't even think about. Today we are going to talk about a rare but very important medical condition that you should be aware of. That is Chylothorax . The name may sound a little strange, but don't worry, let's talk about it simply.

What is chylothorax? Let's understand it simply.

Simply put, a chylothorax is a leakage of a special fluid from our lymphatic system , called chyle , into the empty space around our lungs. Now you may be wondering, what is this lymphatic system, what is this chyle?

Just think, our body has a network of blood vessels, and another system of fine channels. That's what we call the lymphatic system. This system removes excess fluid that accumulates in our body's tissues. Also, there are soldiers like white blood cells in this lymph. They search for and destroy germs, such as bacteria and viruses, that enter our body.

Now, chyle is a special type of lymph. It's made in our digestive tract . It's made up of white blood cells and fats from the food we eat, so it's milky in color. This chyle travels throughout our bodies through a special tube called the thoracic duct . It's like a tube. This tube goes from our stomach, up through our chest, and back into our bloodstream at the neck.

But, if this thoracic duct is damaged in some way, this chyle fluid starts to leak out. And when it leaks out like that and collects in the space around our lungs, that's what we call a chylothorax. Got it?

What are the main types of this condition?

Chylothorax can be divided into three main types:

1. Traumatic chylothorax: This occurs when the lymphatic vessels in our abdomen or chest are damaged, either by an accident or surgery. Think of it like after a major chest operation.

2. Non-traumatic/spontaneous chylothorax: This occurs due to blockage of our lymphatic vessels, weakening of their walls, or excessive accumulation of chyle fluid and rupture of the vessels. Sometimes, this condition can occur in people who are born with certain abnormalities in the chest. This is called congenital chylothorax . Also, it can develop even within a few days of birth.

3. Idiopathic chylothorax:In this case, doctors are unable to find the exact cause of this condition.

How do you know if you have this? What are the symptoms?

The main symptom of this condition is shortness of breath . You may feel like you are suffocating and unable to breathe. Apart from that, there may be several other symptoms:

• Feeling of pressure, tightness, or heaviness in the chest .
• Constantly feeling very tired .
• Unintentional weight loss .

If you have symptoms like these, it is best to definitely seek medical advice.

Why does chylothorax occur? What are the main causes?

In fact, surgery is the most common cause of this. That is, postoperative chylothorax. However, anything that can damage the thoracic duct, which carries chyle fluid, can cause it. That is when chyle fluid leaks from the lymphatic system into the chest. Some other causes are:

• Chest or back injuries: These can be blunt trauma injuries, or injuries that involve a skin wound (such as a knife stab wound).
• Congenital conditions: Some people may have this condition at birth, either due to certain physical changes or medical conditions. That is, either at birth (congenital) or within a few days of birth.
• Various types of cancers: Many types of cancer can cause blockage or damage to the structures in the chest, which can cause the chyle to leak. Examples include lymphoma , chronic lymphocytic leukemia , lung cancer , esophageal cancer , and Kaposi sarcoma .
• Infections: Sometimes infections can damage the ducts that carry chyle, causing the fluid to leak. The main cause of this is tuberculosis .
• Blockage: Any condition that can block the thoracic duct can cause this. Examples include sarcoidosis , blood clots, and goiter .

Who is at higher risk of developing this?

You may be at higher risk of developing chylothorax if you:

• If you have recently had surgery on your chest, neck, or abdomen , especially lung or cardiovascular surgery.
• If there is an injury to the chest or back .
• If you have cancer or a medical condition that causes chest congestion or fluid buildup in the lymphatic system.

How do doctors diagnose this? (Diagnosis)

After listening to your symptoms and health history, a doctor will confirm the diagnosis of chylothorax by performing special imaging tests and examining a sample of fluid from your chest.

Some of the tests done for this are:

• Imaging: To determine if your symptoms are caused by excess fluid in your chest, your doctor will need to take pictures of the inside of your chest. This may include X-rays , ultrasounds , or CT scans .
• Thoracentesis: This involves your doctor taking a small amount of fluid from your chest and sending it to a lab to learn more about what the fluid looks like and why it's leaking.
• Lymphangiography or lymphoscintigraphy: These are special imaging tests that look at your lymphatic system.

What are the treatments for this? Can it be cured?

Treatment for chylothorax depends on the cause. First, your doctor may prescribe a special diet or drain the fluid from your chest. If these don't work, you may need surgery to stop the leak (a lymphangiogram and embolization) or another procedure to stop the fluid from building up again. Treating the underlying cause is the best way to prevent it from happening again.

Some of the special treatments for this are:

• Bowel rest: Your lymphatic system, which carries the chyle, needs some rest to heal. For this, your doctor will stop feeding you completely and give you the necessary nutrition through a saline (`IV`) route. This will allow your digestive system to work less hard to digest food.
• Dietary changes: To reduce the amount of fat your body has to digest, a dietitian may put you on a very low-fat or modified-fat diet. This is only temporary. Restricting healthy fats in this way for too long can lead to malnutrition.
• Draining fluid: A doctor can remove fluid from your chest using a thoracentesis . This can be done all at once, or a chest tube may be placed for a short period of time. While this alone won't cure the damage, it can help reduce symptoms while your body heals.
• Somatostatin or octreotide medications: These are medications given through an IV. They work by changing the way your body absorbs fat and nutrients. Sometimes doctors use them along with other treatments, such as dietary changes, to help your body heal faster.
• Thoracic duct ligation or embolization: If your thoracic duct is damaged or not working properly, a doctor can surgically tie it off (ligation) or intentionally block it (embolization). This can either repair the damage or redirect the fluid so it doesn't leak.
• Pleurodesis: Pleurodesis is a surgical procedure that attaches your lungs to the lining of the chest wall, eliminating the space in your chest where fluid collects.

How serious is this condition? Is it life-threatening?

Chylothorax can be life-threatening if not treated properly . It can also be caused by serious medical conditions. Therefore, ongoing treatment for the underlying condition may be necessary.

Do you need to be careful about food and drink?

Yes, if you have chylothorax, your doctor may prescribe a special diet. This means eating foods that are very low in fat or contain specific types of fat .

You may be asked to stop eating altogether. If that happens, you will receive the nutrition you need through an IV. This will give your body time to heal. However, you should be able to eat normally again in about a week or two.

What are the best times to see a doctor?

If you have unexplained shortness of breath, see a doctor. Especially if:

• If you have recently had surgery.
• If you have recently suffered a chest or back injury.
• If you have any medical condition that causes obstruction in the chest or neck.
• If you have a medical condition that affects your lymphatic system.

When to go to the Emergency Treatment Unit (ETU) :

If you have difficulty breathing, especially if you have chest pain, go to the nearest emergency room immediately . This could be a sign of a life-threatening condition.

Some important questions to ask the doctor

It may be helpful to ask your doctor these questions:

• What is causing this situation for me?
• What treatment options do I have?
• What foods and drinks should I eat/not eat?
• Is there a way to prevent this from happening again?
• How long will it take for me to recover?

What is the difference between Chylothorax and Pleural Effusion?

Pleural effusion is any accumulation of fluid in the pleural space (the space between the lungs and the chest wall). Chylothorax is a special type of pleural effusion. It is the leakage of chyle into the pleural space.

Final Take-Home Message

Chylothorax is a rare but potentially life-threatening condition if left untreated. Surgery is the most common cause. However, it can be caused by anything that blocks or damages the thoracic duct. Most people can successfully treat this condition with temporary dietary changes, IV nutrition, and medications. Some people may need surgical treatment. Your doctor will talk to you about the treatment options that are best for you. So, don't panic, and follow your doctor's instructions. Wishing you a speedy recovery!

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