Feasibility of Peroral Cholangioscopy in the Initial Endoscopic Retrograde Cholangiopancreatography for Malignant Biliary Strictures.

Peroral cholangioscopy (POCS) is valuable for assessing malignant biliary strictures; however, biliary drainage prior to POCS often hinders accurate diagnosis. This retrospective study aimed to investigate the feasibility of POCS using a newly developed cholangioscope, CHF-B290, during initial endoscopic retrograde cholangiopancreatography (ERCP) for malignant biliary strictures. This multicenter retrospective study included patients who underwent initial ERCP for malignant biliary strictures at two institutions between January 2018 and March 2022.

A Case of Advanced Biliary Tract Cancer With EGFR Amplification That Responded to Necitumumab.

Background: Recent advances in cancer genome analysis and the practice of precision medicine have made it possible to identify fractions with rare genetic alterations. Among biliary tract cancers, EGFR-amplified cancers are known to be rare fractions across organs and have a poor prognosis. The use of anti-EGFR antibody for EGFR-amplified cancers has been promising; however, the evidence is not yet clear.

Transarterial and Transvenous Approach for the Embolization of Arteriovenous Fistula between the Hepatic Arteries and Inferior Vena Cava Associated with Liver Abscess Due to Cholangitis.

An 87-year-old woman was hospitalized for liver abscesses and cholangitis due to common bile duct stones. She developed worsening anemia and abdominal pain. Contrast-enhanced computed tomography revealed an intrahepatic pseudoaneurysm and an arteriovenous fistula between the hepatic arteries and inferior vena cava.