Topazian Mark
Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA.
Clin Endosc. 2012 Sep;45(3):328-30. doi: 10.5946/ce.2012.45.3.328. Epub 2012 Aug 22.
Biliary strictures may be due to a variety of benign and malignant processes. Imaging with endoscopic ultrasonography (EUS) often suggests the diagnosis, but is usually not definitive. EUS-guided fine needle aspiration (FNA) facilitates the diagnosis of extrahepatic biliary strictures, although peritioneal metastases due to needle tract seeding may occur after EUS-FNA of cholangiocarcinoma. In addition to diagnosis of strictures, EUS may play an important role in staging of cholangiocarcinoma.
胆管狭窄可能由多种良性和恶性病变引起。内镜超声检查(EUS)成像常有助于诊断,但通常不能确诊。EUS引导下细针穿刺抽吸(FNA)有助于肝外胆管狭窄的诊断,不过胆管癌进行EUS-FNA后可能会因针道种植发生腹膜转移。除了诊断狭窄外,EUS在胆管癌分期中可能也起重要作用。