What is biliary cholangioscopy?

Cholangioscopy uses a small fiber-optic scope to look directly inside the bile ducts. It can be performed two ways: peroral, through the mouth during ERCP — most commonly with the Boston Scientific SpyGlass DS digital single-operator cholangioscopy system, performed by an advanced gastroenterologist; or percutaneous, through a skin tract into the liver — the approach used by interventional radiology when endoscopic access is not possible or insufficient.

Once the scope is positioned in the bile duct, the operator can directly inspect the duct wall, biopsy suspicious lesions, fragment and remove stones with electrohydraulic or holmium laser lithotripsy, and deliver targeted endobiliary therapies such as radiofrequency ablation. For complex biliary disease — indeterminate strictures, difficult intrahepatic stones, or known cholangiocarcinoma — cholangioscopy provides answers and treatment options that cross-sectional imaging and brush cytology cannot.²

How the procedure works

Percutaneous cholangioscopy is most often performed in patients who already have a percutaneous biliary drainage catheter in place from prior procedures. Under sedation in a hospital interventional suite, the drainage tract is gradually dilated to accept the cholangioscope. The scope is then advanced into the bile duct under live fluoroscopic guidance.

Once inside the duct, the operator can directly characterize abnormalities, take targeted intraductal biopsies, fragment stones with electrohydraulic lithotripsy (EHL) or holmium laser lithotripsy and remove them with a basket, and deliver endobiliary RFA where indicated. Procedure time is typically 60–120 minutes depending on what is found and treated.

What to expect

Cholangioscopy is a planned procedure, often part of a coordinated series of biliary interventions.

Who is a good candidate?

Cholangioscopy is most often considered for patients with complex biliary disease that has not been fully characterized or treated by less invasive means. You may be a candidate if any of the following apply:

• Indeterminate biliary stricture requiring direct visualization and targeted biopsy. Direct-visualization biopsy substantially outperforms ERCP brush cytology, with reported sensitivity for malignancy approaching 65–75% versus 40–50% for brushings alone³
• Difficult or impacted bile duct stones that have not been cleared by ERCP — including large intrahepatic stones, hepatolithiasis, post-cholecystectomy retained stones, and stones above a tight stricture. Cholangioscopy-directed lithotripsy achieves stone clearance in over 90% of cases⁴
• Suspected or confirmed cholangiocarcinoma requiring tissue diagnosis or endobiliary therapy
• Failed or anatomically impossible ERCP — post-Whipple, Roux-en-Y gastric bypass, hepaticojejunostomy, or an upstream stricture beyond endoscopic reach
• Dominant stricture in primary sclerosing cholangitis (PSC) requiring biopsy to exclude superimposed cholangiocarcinoma
• Biliary-enteric anastomotic stricture after liver transplant or hepatobiliary surgery

Cholangioscopy is always coordinated with the team managing the underlying disease — hepatology, gastroenterology, hepatobiliary surgery, transplant, or oncology.

Who performs cholangioscopy

Cholangioscopy is performed by advanced gastroenterologists (peroral, with SpyGlass) and by interventional radiologists (percutaneous). At Florida Interventional Specialists, every percutaneous cholangioscopy is performed under live image guidance and integrated into the multidisciplinary biliary care plan, in close partnership with referring GI, hepatology, and surgical teams across Tampa Bay.

Frequently asked questions

What’s the difference between cholangioscopy and ERCP?

ERCP images the bile duct indirectly with contrast and fluoroscopy. Cholangioscopy looks directly inside it with a small fiber-optic scope. SpyGlass cholangioscopy is performed during ERCP; percutaneous cholangioscopy is performed by IR through a skin tract — most often when ERCP has failed or surgical anatomy makes it impossible.

When is percutaneous cholangioscopy used instead of SpyGlass?

When ERCP is not possible or insufficient — post-Whipple, Roux-en-Y, hepaticojejunostomy, or when an upstream lesion cannot be reached from below. Also for difficult intrahepatic stones that have failed endoscopic clearance.

What can be done during cholangioscopy?

Direct inspection of the bile duct wall, targeted biopsy of strictures and lesions, lithotripsy and removal of difficult bile duct stones, and endobiliary RFA of selected malignant strictures.

Is cholangioscopy painful?

The procedure is performed under sedation. Mild discomfort at the catheter site is typical for several days, and most patients return to light activity quickly.

References

1. Oh HC, Easler JJ, Cote GA, et al. Percutaneous transhepatic cholangioscopy in patients with biliary strictures and stones. Gastrointest Endosc. 2016;83(2):437–442.
2. Tabibian JH, Visrodia KH, Levy MJ, Gostout CJ. Advanced endoscopic imaging of indeterminate biliary strictures. World J Gastrointest Endosc. 2015;7(18):1268–1278.
3. Navaneethan U, Hasan MK, Kommaraju K, et al. Digital, single-operator cholangiopancreatoscopy in the diagnosis and management of pancreatobiliary disorders: a multicenter clinical experience. Gastrointest Endosc. 2016;84(4):649–655.
4. Korrapati P, Ciolino J, Wani S, et al. The efficacy of peroral cholangioscopy for difficult bile duct stones and indeterminate strictures: a systematic review and meta-analysis. Endosc Int Open. 2016;4(3):E263–E275.