Overview

This is an observational study with a prospective cohort design. This study enrolled patients with suspected hilar cholangiocarcinoma on imaging. This study aims to evaluate the histopathological diagnostic efficacy of endoscopic ultrasound-guided fine-needle aspiration/biopsy (EUS-FNA/B) and endoscopic retrograde cholangiopancreatography (ERCP) with or without peroral cholangioscopy targeted biopsy (POCS-TB) in patients with suspected hilar cholangiocarcinoma. In addition, the incidence of complications was compared between the EUS-FNA/B and ERCP with or without POCS-TB. The impact of the histopathological diagnosis on survival outcomes in patients with suspected hilar cholangiocarcinoma was evaluated.

Eligibility

Inclusion Criteria:

1. 18-90 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.