Caroli Disease

Overview

Caroli disease is a rare condition present from birth that affects the bile ducts inside your liver. Bile ducts are small tubes that carry bile (a fluid that helps digest food) from your liver to your gallbladder and intestines. In Caroli disease, some of these ducts are wider than normal, which can cause bile to pool and lead to problems such as infections, stones, and liver damage over time.

No, Caroli disease is very rare. Experts think it affects about 1 in 1 million people, though it may be more common in certain families.

It can affect anyone, but because it is genetic, it can run in families. Most people are diagnosed between the ages of 20 and 50, but children and older adults can also be affected.

Symptoms

Common symptoms

• Pain in the upper right side of the belly (abdomen)
• Fever and chills, often from infection in the bile ducts
• Yellowing of the skin and eyes (jaundice)
• Itchy skin
• Feeling tired and weak
• Poor appetite and weight loss
• Dark urine or pale, clay-colored stools

Symptoms in children

• Poor growth and failure to gain weight
• Swelling of the belly due to an enlarged liver or spleen
• Repeated fevers or infections
• Yellowing of the skin and eyes (jaundice)
• Kidney problems, especially if the condition is linked with polycystic kidney disease

Symptoms in older adults

• Symptoms may be similar to other liver or gallbladder conditions, so they can be overlooked at first.
• Older adults may have more frequent or severe infections and feel more tired.
• Some older adults have no symptoms at all and are only diagnosed when tests are done for another reason.

Causes

Main causes

• Caroli disease is caused by a change (mutation) in one of several genes that help the bile ducts form properly during development.
• This gene change is usually inherited from a parent, but sometimes it happens for no known reason.

Risk factors

• Having a parent or sibling with Caroli disease or a related condition
• Having a personal or family history of congenital hepatic fibrosis (a condition that causes scarring of the liver)
• Having polycystic kidney disease (a condition that causes cysts in the kidneys)

When to see a doctor

See a doctor urgently if:

• If you have a fever with chills, severe abdominal pain, yellowing of your skin or eyes, or you suddenly feel very unwell, see a doctor the same day. These can be signs of an infection in the bile ducts that needs urgent treatment.

Book a routine appointment if:

• If you have any ongoing symptoms like tiredness, pain in the upper right belly, or itchy skin, make a routine appointment to discuss them with your doctor.

Diagnosis

Doctors use imaging tests to look at your liver and bile ducts. These tests can show whether the bile ducts are wider than normal. You may also have blood tests to check how well your liver is working and to look for signs of infection.

Tests that may be done

• Abdominal ultrasound – a safe, painless scan that uses sound waves to create images of your liver and bile ducts
• Magnetic resonance cholangiopancreatography (MRCP) – a special MRI scan that gives detailed pictures of your bile ducts
• CT scan of the abdomen – a type of X-ray that creates cross-sectional images of your organs
• Blood tests – to check liver function and look for signs of infection or blockage
• Genetic testing – to look for the specific gene changes that cause Caroli disease

What to expect at your appointment

You will likely be referred to a specialist doctor called a hepatologist (liver specialist) or a gastroenterologist (digestive system specialist). They will review your test results and talk with you about your treatment options. It may take several appointments to complete all the tests, but your healthcare team will guide you through every step.

Treatment

Treatment for Caroli disease aims to control symptoms, prevent infections, and protect your liver. There is no cure yet, but many treatments can help. Your care plan will depend on your symptoms, the size of the affected ducts, and how much your liver is involved. You will work closely with a team of specialists.

Self-care at home

• Drink plenty of fluids and eat a balanced diet.
• Wash your hands regularly and keep good hygiene to reduce the risk of infections.
• Avoid alcohol and any medicines that can stress the liver, unless your doctor says they are safe.
• Ask your doctor or pharmacist about recommended vaccinations, such as for hepatitis A and B and the flu.

Medical treatments

Your doctor may prescribe medicines to manage symptoms such as itchy skin or to treat bacterial infections when they happen. Some people benefit from medicines that help bile flow more easily. Your doctor will choose the safest options for you based on your exact situation.

When is surgery considered?

If a small part of the liver is severely affected and keeps causing infections, a surgeon may remove that section (called a partial liver resection). If the whole liver is damaged and no longer works well, a liver transplant may be recommended. Surgery is considered only after trying other treatments, and a specialist team will help you weigh the benefits and risks.

Living with this condition

Living with Caroli disease means staying aware of your body and seeking help early if something feels wrong. Many people manage well with regular check-ups, taking prescribed treatments, and avoiding things that can trigger liver problems.

Lifestyle tips

• Stay physically active with moderate exercise, but rest when you feel tired.
• Eat regular meals and maintain a healthy weight.
• Ask your doctor before taking any over-the-counter medicines, supplements, or herbal remedies, as some can affect the liver.
• Quit smoking and limit alcohol, or avoid it entirely, to protect your liver.
• Keep in close contact with your specialist team and attend all scheduled appointments.

Diet and exercise

There is no special diet for Caroli disease, but eating a balanced diet with plenty of vegetables, fruits, whole grains, and lean proteins helps keep your liver healthy. If your liver function is reduced, you may need to limit salt or protein, and your doctor or a dietitian can give you specific guidance.

Mental health and emotional wellbeing

Living with a chronic condition can be stressful and sometimes frightening. It is normal to feel anxious or down at times. Talk to your doctor about your feelings, and consider speaking with a mental health professional if you need extra support. If you ever have thoughts of harming yourself, tell someone you trust or call a crisis line in your country right away.

Prevention

Because Caroli disease is genetic, it cannot be prevented. However, some complications can be reduced with early medical care and regular monitoring. If you are planning to have children, a genetic counselor can talk to you about the chances of passing the condition on.

Screening programmes

If you have a family history of Caroli disease, your doctor may suggest screening in at-risk family members, such as an abdominal ultrasound or genetic test, to find the condition early and manage it before problems develop.

Complications

If left untreated

• Recurrent bacterial infections in the bile ducts (cholangitis), which can spread to the bloodstream if severe
• Bile stones and blockages that cause pain and jaundice
• Scarring of the liver (fibrosis) that can progress to cirrhosis (advanced liver damage)
• A small but real risk of bile duct cancer (cholangiocarcinoma), which is why regular monitoring is essential

Long-term outlook

With the right care and regular monitoring, most people with Caroli disease can live a full and productive life. Complications like infections and stones can often be managed with prompt treatment. For those with advanced liver damage, a liver transplant can offer excellent long-term results. This is a serious condition, but it is not one without hope. Your healthcare team will be with you at every step.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.