1. IgG4-related Sclerosing Cholangitis Mimicking Cholangiocarcinoma Diagnosed by Endoscopic Ultrasound-guided Fine-needle Aspiration
- Author
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Ryotaro Matsumoto, Takanori Sano, Atsushi Masamune, Kazuhiro Kikuta, Atsushi Kanno, Mio Ikeda, Yu Tanaka, Kiyoshi Kume, Shin Miura, Seiji Hongou, Tetsuya Takikawa, Tatsuhide Nabeshima, and Shin Hamada
- Subjects
Male ,sclerosing cholangitis ,Endoscopic ultrasound ,medicine.medical_specialty ,Cholangitis, Sclerosing ,pancreatitis ,Case Report ,030204 cardiovascular system & hematology ,Cholangiocarcinoma ,Diagnosis, Differential ,03 medical and health sciences ,0302 clinical medicine ,parasitic diseases ,IgG4-related diseases ,Internal Medicine ,medicine ,Humans ,fine-needle aspiration ,skin and connective tissue diseases ,Endoscopic Ultrasound-Guided Fine Needle Aspiration ,Pathological ,Autoimmune pancreatitis ,IgG4 ,medicine.diagnostic_test ,Common bile duct ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,digestive system diseases ,Stenosis ,Fine-needle aspiration ,medicine.anatomical_structure ,Bile Duct Neoplasms ,Immunoglobulin G ,Pancreatitis ,030211 gastroenterology & hepatology ,Obstructive jaundice ,Radiology ,business ,obstructive jaundice - Abstract
A 58-year-old man was referred for obstructive jaundice. Imaging modalities revealed the presence of multiple pancreatic tumors and the stenosis of the middle common bile duct due to a hypoenhanced localized tumor. The multiple pancreatic tumors were histopathologically diagnosed as autoimmune pancreatitis by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). To differentiate between IgG4-related sclerosing cholangitis (IgG4-SC) and cholangiocarcinoma, we diagnosed the biliary tumor as IgG4-SC by EUS-FNA because of insufficient pathological materials obtained in a transpapillary manner. We herein report a case of IgG4-SC diagnosed by EUS-FNA.
- Published
- 2020