title: [Primary Biliary Mucosa-associated Lymphoid Tissue Lymphoma Mimicking Hilar Cholangiocarcinoma].
abstract: Primary biliary mucosa-associated lymphoid tissue (MALT) lymphoma is extremely rare. We report a case of primary biliary MALT lymphoma with obstructive jaundice diagnosed by endoscopic biopsy, without surgical intervention. Obstructive jaundice was relieved by endoscopic drainage and endoscopic biopsy was done simultaneously during endoscopic retrograde cholangiopancreatography. Unnecessary surgical intervention can be avoided after pathological confirmation of lymphoma. The patient received radiotherapy, and is alive without any evidence of recurrence or biliary obstruction. Diagnosis of primary biliary lymphoma is very difficult because of its low prevalence. However, it should always be considered as a differential diagnosis, since when an accurate diagnosis is made, unnecessary surgical intervention can be avoided.
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Seungha
authors.initials: S
authors.lastname: Hwang
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Tae Jun
authors.initials: TJ
authors.lastname: Song
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Seol
authors.initials: S
authors.lastname: So
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Min Kyung
authors.initials: MK
authors.lastname: Jeon
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Eun Hye
authors.initials: EH
authors.lastname: Oh
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Byoung Soo
authors.initials: BS
authors.lastname: Kwon
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Sujong
authors.initials: S
authors.lastname: An
authors.affiliation: Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors.forename: Myung Hwan
authors.initials: MH
authors.lastname: Kim
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D000368:Aged; D001653:Bile Ducts, Intrahepatic; D001853:Bone Marrow / Q000473:pathology; D018281:Cholangiocarcinoma / Q000175:diagnosis / Q000473:pathology; D002760:Cholangiopancreatography, Endoscopic Retrograde; D002779:Cholestasis / Q000150:complications / Q000175:diagnosis; D003937:Diagnosis, Differential; D004322:Drainage; D016099:Endoscopy, Gastrointestinal; D006801:Humans; D007150:Immunohistochemistry; D041781:Jaundice, Obstructive / Q000473:pathology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000175:diagnosis* / Q000473:pathology* / Q000532:radiotherapy; D008297:Male; D015260:Neprilysin / Q000378:metabolism; D049268:Positron-Emission Tomography; D015607:Stents; D014057:Tomography, X-Ray Computed
chemical_list: D015260:Neprilysin
keywords: Cholangiocarcinoma; Endoscopic retrograde cholangiopancreatography; Lymphoma, mucosa-associated lymphoid tissue; Obstructive jaundice; Radiotherapy