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Published on: February 28, 2025
Biliary atresia type I cyst and choledochal cyst [corrected]: can we differentiate or not?
Tatsuya Suzuki1, Takashi Hashimoto, Mohamed Hamed Hussein
1Department of Pediatric Surgery, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 4701192, Japan. tsuzuki@fujita-hu.ac.jp
Insights
Differentiating choledochal cysts from biliary atresia in infants is challenging. While cyst size and characteristics offer clues, definitive diagnosis remains difficult, even with type I cyst biliary atresia cases.
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Neonatal Medicine
Background:
- Distinguishing choledochal cysts with obstructive jaundice from biliary atresia with a porta hepatis cyst in neonates is clinically challenging.
- This review addresses the diagnostic difficulties and presents institutional experience with type I cyst biliary atresia.
Purpose of the Study:
- To evaluate the possibility of differentiating choledochal cysts from biliary atresia in infants.
- To provide an overview of management and outcomes for type I cyst biliary atresia patients.
Main Methods:
- Retrospective review of infants diagnosed with type I cyst biliary atresia among all treated biliary atresia cases.
- Comparison of clinical course and management with institutional cases and reported literature.
Main Results:
- Eleven out of 220 (5%) biliary atresia cases were diagnosed as type I cyst biliary atresia.
- Nine of these patients (81.8%) survived with their native liver and remained jaundice-free after surgical intervention (hepaticoenterostomy or hepatic portoenterostomy).
- Three patients experienced severe late complications.
Conclusions:
- Larger cysts are more indicative of choledochal cysts, while smaller, static, anechoic cysts suggest cystic biliary atresia.
- Despite these indicators, definitive differentiation between choledochal cysts and type I cyst biliary atresia remains difficult due to exceptional cases.
Background/Purpose:
It is difficult to discriminate between choledochal cyst[corrected]with obstructive jaundice and biliary atresia with a cyst at the porta hepatis in neonates or young infants. This review evaluates whether it is possible to differentiate between these two diseases. We here also provide an overview of our experience with type I cyst biliary atresia patients.
Methods:
Among all the biliary atresia infants who we treated, the infants who were diagnosed with type I cyst biliary atresia were identified and reviewed for their management and outcome. The clinical course and management in different reports were reviewed and compared to the cases presented to our institution.
Results:
Among the 220 biliary atresia cases, 11 (5 %; male/female: 4/7) were diagnosed to be type I cyst biliary atresia. Two received hepaticoenterostomy and nine received hepatic portoenteros. Three patients had severe late complications; overall, nine (81.8 %) were alive with their native liver and without jaundice.
Conclusions:
Patient with choledochal cyst [corrected] are likely to represent larger cysts and inversely, smaller, static, anechoic cysts are more likely to represent cystic biliary atresia. However, exceptional cases were yet presented, and a definitive diagnosis may not be reached. Thus a complete differentiation between choledochal cyst [corrected] from type I cyst biliary atresia is yet hard to reach.
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