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Updated: Jan 2, 2026
Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
Published on: March 25, 2022
Endoscopic Stenting in Hilar Cholangiocarcinoma: When, How, and How Much to Drain?
Andrea Tringali1,2, Ivo Boškoski1,2, Guido Costamagna1,2
1Digestive Endoscopy Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
Insights
Hilar cholangiocarcinoma (HCCA) requires careful planning for biliary drainage to minimize complications. Effective drainage, guided by imaging, involves decompressing over 50% of the liver volume using appropriate stents.
Area of Science:
- Hepatobiliary Surgery
- Gastroenterology
- Oncology
Background:
- Hilar cholangiocarcinoma (HCCA) presents complex anatomical challenges involving the confluence of bile ducts, arteries, and veins.
- HCCA can cause biliary strictures at the hepatic confluence, affecting both right and left intrahepatic ducts.
- Endoscopic biliary drainage in jaundiced HCCA patients is technically difficult and associated with a high risk of infection.
Purpose of the Study:
- To evaluate the multidisciplinary approach for biliary drainage in HCCA.
- To define optimal imaging and drainage strategies for HCCA.
- To differentiate indications for preoperative versus palliative biliary drainage.
Main Methods:
- Multidisciplinary evaluation of HCCA cases.
- Pre-procedural planning using magnetic resonance cholangiography (MRC) to delineate biliary anatomy.
- Assessment of liver segmentation using CT scans to identify atrophic segments.
- Stent selection based on drainage goals (preoperative vs. palliative).
Main Results:
- Targeted drainage of intrahepatic ducts above the hilar stricture is crucial to prevent septic complications.
- Draining over 50% of liver volume is important for bilirubin reduction and complication mitigation.
- Atrophic liver segments should not be drained due to increased cholangitis risk.
- Plastic stents are recommended for preoperative drainage; uncovered metal stents are indicated for palliative drainage of malignant hilar strictures.
Conclusions:
- Careful multidisciplinary assessment is essential for determining the purpose and strategy of biliary drainage in HCCA.
- Comprehensive biliary drainage, guided by MRC and CT, is key to reducing complications.
- Appropriate stent selection (plastic vs. metal, covered vs. uncovered) is critical for successful HCCA management.
Abstract:
Hilar cholangiocarcinoma (HCCA) involves a complex anatomical region where bile ducts, arteries, and veins create a complex network. HCCA can lead to biliary strictures at the main hepatic confluence, involving the right and left radicles. Endoscopic drainage of jaundiced patients with HCCA is challenging and carries a high risk of infective complications. HCCA needs a careful multidisciplinary evaluation to assess the indication and purposes (preoperative/palliative) of the biliary drainage. Biliary drainage in HCCA needs to be planned by magnetic resonance cholangiography in order to study the biliary anatomy and perform a target drainage of the intrahepatic ducts above the malignant hilar stricture; all the opacified intrahepatic ducts above the hilar stricture must be drained to reduce septic complications. Drainage of >50% of the liver volume is important to obtain bilirubin reduction and less complications, but atrophic liver segments (identified by CT scan) do not require drainage due to the increased risk of cholangitis. When preoperative biliary drainage is planned, plastic stents must be inserted. Self-expandable metal stents are indicated for palliative purposes and should be placed only when a complete liver drainage is possible; only uncovered metal stents are indicated to drain malignant hilar strictures to avoid side-branch occlusion.
