Diagnostic Efficacy of EUS-FNA/B Versus ERCP With or Without POCS-TB in Patients With Suspected Hilar Cholangiocarcinoma

Inclusion Criteria:

1. ≥ 18 years old;
2. Newly diagnosed patients with suspected hilar cholangiocarcinoma on imaging examination

Exclusion Criteria:

1. Patients with a definite diagnosis of cholangiocarcinoma by imaging (enhanced CT, MRI, or MRCP) and surgical candidacy within 3 months;
2. Patients scheduled for liver transplantation;
3. Patients with previous gastroduodenal diversion or biliary surgery;
4. Patients with hilar bile duct stenosis caused by tumor or lesion outside the bile duct;
5. Pregnant or lactating women;
6. Patients who cannot tolerate intravenous general anesthesia due to various reasons;
7. Patients with severe coagulation dysfunction, or patients who cannot stop antiplatelet/anticoagulant therapy for a short time and are unsuitable for low molecular weight heparin replacement therapy;
8. Patients who refused to sign informed consent.