Testing & Diagnosis for Choledochal Cysts in Children

How are choledochal cysts diagnosed?

Choledochal cysts can be diagnosed prenatally on an ultrasound.

After your baby is born, you or your child's doctor may notice a right upper quadrant mass, with or without jaundice.

Your child will likely undergo a combination of the following tests to verify the diagnosis:

  • Computerized tomography scan (CT or CAT scan) — A CT scan shows detailed images of any part of your child’s biliary system.
    • CT scans are more detailed than general x-rays.
  • Cholangiography — This is a radiographic visualization of your child’s bile ducts after ingestion or injection of a substance that illuminates the ducts.