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CHOLEDOCHAL CYST

A choledochal cyst is an abnormal balloon-like swelling of the bile duct.The bile duct is the tube that carries bile from the liver to the intestine to help digest food.In this condition, part of the bile duct becomes wide and swollen, instead of being a normal thin tube.

Choledochal cyst explained—causes, symptoms, diagnosis, complications, and treatment including surgical management.

FAQ

Why does a choledochal cyst happen?

  • It is usually present from birth

  • Happens because the bile duct does not form normally

  • Sometimes linked to abnormal joining of bile duct and pancreatic duct

👉 It is not caused by food or lifestyle

Who can get a choledochal cyst?

  • Mostly seen in children

  • Can also be found in young adults

  • More common in females

What problems does it cause?

The swollen bile duct:

  • Collects bile instead of letting it flow

  • Causes repeated infection and inflammation

  • Damages the liver over time

Common symptoms

Symptoms may vary with age.

In children:

  • Yellow eyes and skin (jaundice)

  • Abdominal pain

  • Abdominal lump

  • Fever

In adults:

  • Recurrent abdominal pain

  • Jaundice

  • Fever due to infection

  • Pancreatitis (pain radiating to the back)

Why is choledochal cyst dangerous if untreated?

If not treated early, it can lead to:

  • Repeated bile duct infections

  • Liver damage

  • Stones in bile duct

  • Pancreatitis

  • Cancer of bile duct (in long-standing cases)

⚠ This is why treatment is strongly recommended, even if symptoms are mild.

How is choledochal cyst diagnosed?

  • Ultrasound

  • CT scan or MRI (MRCP) to see bile ducts clearly

  • Blood tests to check liver function

How is choledochal cyst treated?

💡 Surgery is the main and permanent treatment

What surgery is done?

  • The entire cyst is removed

  • A new path is created to drain bile from the liver to intestine
    (usually by connecting bile duct to intestine)

This prevents future problems and cancer risk.

Life after surgery

  • Most patients live a normal, healthy life

  • Regular follow-up is needed

  • Liver function usually improves

  • Very low risk of future complications if treated early

Simple explanation 

“You were born with a swelling in the bile pipe. If we remove it and create a new drainage route, bile will flow normally and future problems can be prevented.”

 Summary

Choledochal cyst is a birth-related swelling of the bile duct that must be surgically removed to prevent liver damage and cancer.

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