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Updated: Mar 19, 2026

Laparoscopic Choledochal Cyst Excision and Roux-en-Y Choledochojejunostomy in Adults
Published on: February 28, 2025
Isolated cystic duct cyst with associated stones in a 4-month-old boy
Joong Kee Youn1, Hyejin Kim1, Hyun-Young Kim1
1Department of Pediatric Surgery, Seoul National University Children's Hospital, Seoul, Korea.
Insights
Isolated cystic duct cysts are rare congenital anomalies. This case report details a successful surgical removal in a 4-month-old infant, highlighting the need for distinct classification.
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Congenital Anomalies
Background:
- Isolated cystic duct cysts are exceptionally rare biliary tract malformations.
- Existing classifications of choledochal cysts do not adequately address isolated cystic duct cysts.
Observation:
- A 4-month-old male infant presented with abdominal pain and vomiting.
- Imaging revealed an isolated cyst originating from the cystic duct, accompanied by gallstones.
Findings:
- The patient underwent successful open cholecystectomy with complete excision of the cyst and cystic duct.
- Postoperative recovery was uneventful, with no complications reported.
Implications:
- This case underscores the importance of recognizing isolated cystic duct cysts as a distinct entity.
- Consideration should be given to including this rare anomaly in future classifications of biliary cysts.
Abstract:
Isolated cystic duct cysts are rare entities, with few cases having been reported. We present the case of a 4-month-old male patient presenting with abdominal pain and vomiting. Ultrasonography and magnetic resonance cholangiopancreatography revealed an isolated cystic duct cyst with associated stones. The patient underwent open cholecystectomy with complete cyst excision and cystic duct transection; there were no postoperative complications. While lesions like the one described herein are extremely rare, they should be included as a separate category in classifications of choledochal cysts.
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