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Updated: May 22, 2026
Laparoscopic Choledochal Cyst Excision and Roux-en-Y Choledochojejunostomy in Adults
Published on: February 28, 2025
Endoscopic biliary drainage for children with persistent or exacerbated symptoms of choledochal cysts
Hironori Tsuchiya1, Kenitiro Kaneko, Akihiro Itoh
1Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8560, Japan.
Insights
Endoscopic drainage using short biliary stents effectively relieved symptoms in children with choledochal cysts by clearing obstructive protein plugs. This preoperative management proved adequate and effective for these complex pancreatobiliary conditions.
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Biliary Tract Diseases
Background:
- Choledochal cysts can present with persistent or worsening symptoms.
- Protein plugs obstructing pancreatobiliary ducts are theorized to cause these symptoms.
- Endoscopic drainage was prospectively investigated as a preoperative management strategy.
Purpose of the Study:
- To evaluate the efficacy of endoscopic drainage in managing symptomatic choledochal cysts.
- To test the hypothesis that protein plugs cause obstruction and symptoms.
Main Methods:
- Children with choledochal cysts underwent endoscopic retrograde cholangiopancreatography (ERCP).
- Patients with persistent symptoms and filling defects had short biliary stents placed for drainage.
- Clinical and ERCP findings were compared between symptomatic and asymptomatic patients.
Main Results:
- 13 symptomatic and 41 asymptomatic patients were analyzed.
- Symptomatic patients more frequently exhibited jaundice and elevated transaminases.
- Endoscopic stenting was successful in 11 of 13 patients, relieving symptoms and revealing protein plugs as the primary obstruction.
Conclusions:
- The findings support the protein plug theory for choledochal cyst symptoms.
- Endoscopic short-tube stenting is an adequate and effective preoperative management approach.
Background:
Symptoms of choledochal cysts sometimes persist or become exacerbated. As preoperative management for patients with these cysts, we prospectively employed endoscopic drainage, based on the theory that protein plugs cause symptoms by obstructing the pancreatobiliary ducts.
Methods:
Children with choledochal cysts underwent endoscopic retrograde cholangiopancreatography (ERCP). When ERCP showed compaction with filling defects in patients with persistent or worsening symptoms (study patients), the placement of a short biliary stent tube was attempted for drainage. The clinical and ERCP findings of the study patients were compared with those of patients who were asymptomatic at ERCP (asymptomatic patients).
Results:
There were 13 study patients (median age 2.9 years) and 41 asymptomatic patients (4.7 years) enrolled in the study between August 2005 and February 2011. Study patients more frequently had jaundice and elevated transaminase levels. ERCP showed that all study patients had obstruction or compacted filling defects in the common channel or the narrow segment distal to the cyst. Insertion of a stent tube was successful in 11 patients. Symptoms were relieved soon after biliary drainage. Surgery revealed that the obstructing materials were protein plugs, except in one case, which involved fatty acid calcium stones.
Conclusions:
These results support the protein plug theory. Endoscopic short-tube stenting is adequate and effective as preoperative management.
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