2017 Volume 59 Issue 3 Pages 284-290
A 45-year-old male was undergoing regular follow-up observations for primary sclerosing cholangitis (PSC) and ulcerative colitis. He was referred to our department when the results of a CT scan performed before total colectomy revealed bile duct wall thickening. Ultrasound, CT, and MRI examinations revealed a 2-cm papillary mass in the anterior segmental bile duct. Endoscopic retrograde cholangiopancreatography revealed a filling defect in the anterior segmental bile duct. Peroral cholangioscopy revealed a papillary mass that filled the lumen of the anterior segmental bile duct and granular mucosa in the lower bile duct. Biopsy results led to the diagnosis of intraductal papillary neoplasm of the bile duct (IPNB). Right lobectomy and extrahepatic bile duct excision were performed. In this case, peroral cholangioscopy was useful for diagnosing the extent of superficial infiltration of the IPNB and for planning the surgical procedure.
