Have you ever felt strange pain in the upper right side of your stomach, yellowing of your skin and eyes, or loss of appetite? You may have noticed that your stools have turned pale. These are not just random things. One possible medical reason behind this is a narrowing of the bile ducts. We medically call this `(Biliary Stricture)`. Don't worry, we will talk about everything in simple terms.
Simply put, what is biliary stricture?
Imagine if a water pipe gets clogged with dirt or if the pipe gets squeezed, the water flow gets blocked, right? That's what happens here too. Bile is a fluid that is essential for the digestive process in our body. This bile is produced in our liver and travels to the small intestine through a system of small tubes. When the tubes through which the bile flows become narrow, narrowed, or blocked for some reason, this is called a biliary stricture.
When the bile duct becomes blocked in this way, bile starts to accumulate inside the liver. This makes it difficult for our body to digest food, especially fatty foods. And many other symptoms start to appear.
What are the causes of bile duct narrowing?
There can be many causes for this condition. Some causes are related to cancerous conditions, while others are related to other non-cancerous conditions. Roughly speaking, about 70% of these conditions are due to cancerous causes, and the remaining 30% are due to non-cancerous causes.
To make it easier to understand, let's categorize these reasons.
| Reason type | Description and examples |
|---|---|
| Cancerous Causes | This is the most common cause. A cancerous tumor can press on or grow inside the bile duct, causing it to become narrow.
|
| Non-cancerous Causes | This condition can also be caused by other diseases, surgeries, or accidents. |
In particular, after some surgeries, such as a liver transplant or a Whipple procedure, the vessels can become narrowed due to scarring at the anastomosis.
What are the symptoms of bile duct stenosis?
When the bile duct becomes blocked, it affects our body in many ways. If you have one or more of these symptoms, you should be concerned.
| Symptom | A simple explanation |
|---|---|
| Yellowing of the skin and eyes (Jaundice) | This is the main and most obvious symptom. This happens because the yellow pigment called bilirubin in bile cannot be excreted from the body and accumulates in the blood. |
| Itchy skin/Pruritus | Bile salts can build up under the skin, causing the entire body to itch unbearably. |
| Pale or clay-colored stools | Normally, the brown color of our stool comes from bile. When bile stops reaching the intestines, the stool loses its color and takes on a pale color. |
| Pain in the upper right side of the abdomen | A strange, constant pain coming from the area where the liver and bile ducts are located. |
| Fever and chills | If bile accumulates and becomes infected, fever and chills may occur. |
| Other features | Nausea, vomiting, loss of appetite, and weight loss may also be seen. |
How to diagnose the disease?
When you see a doctor with these symptoms, he or she will examine you and run several tests to diagnose the condition. Typically, a gastroenterologist (a doctor who specializes in the digestive system) treats these conditions.
Blood Tests
First, some blood tests are done.
- Bilirubin test: This measures how high the bilirubin level in the blood is.
- Liver Function Tests: These tests look for elevated liver enzyme levels to determine if there is liver damage.
Scans and other imaging tests
After the blood tests, several scans are performed to look at the condition of the bile ducts from the inside.
- Ultrasound Scan: This is the simplest, most painless test that can be done first. It takes images of the abdominal organs and can give a rough idea of whether the bile ducts are swollen, have stones, or are blocked.
- ERCP (Endoscopic Retrograde Cholangiopancreatography): This is a very important test used for both diagnosis and treatment. You are given a sedative, and a small tube with a camera attached to it is inserted through your mouth, through your stomach, and into the opening of your bile duct. A special dye is then injected into the duct and X-rays are taken. This shows where the blockage is clearly visible. If necessary, a piece of tissue can be taken at this time for examination (biopsy) and treatment of the blockage.
- MRCP (Magnetic Resonance Cholangiopancreatography): This is an MRI scan. Without inserting any tubes into the body, a magnetic field is used to obtain very clear three-dimensional images of the bile ducts, liver, gallbladder, and pancreas.
- PTC (Percutaneous Transhepatic Cholangiography): In some cases, a very small needle is inserted through the skin into the liver, a dye is injected into the bile ducts, and an X-ray is taken.
What are the treatments for this?
The treatment method depends on the cause of the narrowing of the bile ducts.
In many cases, treatment can be performed at the same time as the ERCP test. This is very convenient for the patient because it can be done without having to undergo major surgery.
Treatments that can be performed during an ERCP include:
- Stone removal: If stones are stuck in the gallbladder, they are broken up or removed with special instruments.
- Stent Placement: The narrowed artery is widened by inserting and inflating something like a balloon. Then, to keep the artery open and not narrow again, a stent , a small mesh-like tube, is placed inside. These can be made of plastic or metal.
- Tumor removal: If the blockage is caused by a small tumor, it may be possible to remove it.
Surgical Treatments
In some cases, especially if it is a cancerous condition, surgery may be necessary.
- Bypass Surgery: This involves bypassing the blocked duct and creating a new path for bile to flow.
- Resection and Anastomosis: The diseased section of the bile duct is cut and removed , and the remaining two healthy sections are reconnected.
Is there anything we can do to prevent this situation?
We can't prevent all the causes of bile duct stenosis, such as cancer. However, there are some risk factors that we can control. By taking care of them, we can reduce the risk of developing this condition.
- Maintain a healthy diet: Reduce foods high in oil and fat, and add plenty of fruits and vegetables to your diet.
- Control your cholesterol: High cholesterol can lead to gallstones, so it's important to control your cholesterol levels.
- Maintain a healthy weight: Controlling body weight is also beneficial for gallbladder health.
- Avoid excessive alcohol consumption: Excessive alcohol consumption can damage the liver and cause pancreatitis. Both of these conditions can lead to narrowing of the bile ducts.
When should you see a doctor?
If you have any of the following symptoms, do not ignore them. See your doctor as soon as possible for advice.
| Feature to pay attention to |
|---|
| If your skin or the whites of your eyes turn yellow (jaundice). |
| If you have persistent or recurring pain in the upper right side of your abdomen. |
| If you lose weight for no reason. |
| If there is persistent fever and chills. |
| After treatment, the surgical site shows signs of infection, such as redness, swelling, or pus. |
Take-Home Message
- Yellowing of the skin and eyes (jaundice), pain in the upper right side of the abdomen, and pale stools are the main warning signs of bile duct obstruction. Never ignore these.
- This can be caused by a wide range of things, from simple conditions like gallstones to more serious conditions like cancer.
- Blood tests, scans, and especially tests such as ERCP are very important for an accurate diagnosis.
- In many cases, the duct can be opened using ERCP without surgery.
- Your future health depends on the cause of your bile duct obstruction, so it is important to seek medical advice as soon as possible.
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