Based on the classification of congenital choledochal cysts, images of different cyst types were selected to compose a pictorial essay about this disease, which is not frequently observed in the medical practice, but is included in the differential diagnosis of most common lesions of the biliary tract. Choledochal cysts present nonspecific symptoms and low prevalence. The correct diagnosis based on imaging findings is mandatory to avoid complications, and to aid in the approach and definite treatment.
Keywords: Magnetic resonance imaging; Choledochal cyst; Bile ducts.
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