Choledochal cysts: Similarities and differences between Asian and Western countries

Area of Science:

• Gastroenterology and Hepatology
• Pediatric Surgery
• Surgical Oncology

Background:

• Choledochal cysts (CCs) are rare congenital bile duct dilatations with higher prevalence in Asian populations.
• Etiology is linked to anomalous pancreaticobiliary junction, a congenital anomaly.
• Existing literature predominantly originates from Asia, influencing current management strategies.

Purpose of the Study:

• To compare the presentation and malignant potential of choledochal cysts in Asian and Western populations.
• To evaluate the applicability of Asian-derived management guidelines to Western patients.
• To clarify the actual cancer risk associated with choledochal cysts in different demographics.

Main Methods:

• Review of existing literature comparing choledochal cyst presentation and outcomes in Asian and Western cohorts.
• Analysis of reported symptomatic presentation differences and malignant transformation rates.
• Evaluation of current surgical recommendations based on geographical origin of data.

Main Results:

• While female predominance is consistent, Asian patients may present with more symptoms.
• The reported malignant risk of over 10% in Asian patients after age 20 may be overestimated in Western populations.
• Despite demographic differences in cancer risk, management guidelines remain largely Asia-centric.

Conclusions:

• Choledochal cyst management guidelines, primarily based on Asian data, warrant critical evaluation for Western populations.
• Further research is needed to refine risk stratification and tailor treatment strategies based on geographical and demographic factors.
• The universal recommendation for surgical excision of all choledochal cysts should be reconsidered in light of potentially differing malignant risks.