Contribution of the EyeMAX™ 11Fr (Micro-Tech) Digital Single-Operator Cholangioscope With a Wide Working Channel

Exclusion Criteria

• •patients with significant tissue mass that could easily be punctured by EUS-FNB were not included.
• •non-accessibility to the bile duct due to a history of Billroth II or Roux-en-Y reconstruction,
• •coagulation disorders (such as partial thromboplastin time \> 42 seconds, prothrombin time \[Quick value\] \< 50%, or platelet count \< 50,000/mm³), or treatment with clopidogrel.