title: A Rare Case of Diffuse Large B-cell Lymphoma in a Patient with IgG4-Related Autoimmune Pancreatitis.
abstract: A 61-year-old Japanese man with IgG4-related autoimmune pancreatitis was referred to our hospital because of perspiration during food intake. Abdominal computed tomography (CT) with contrast media revealed multiple mesenteric lymphadenopathies. An open surgical abdominal biopsy and subsequent histopathological analysis revealed abnormally large lymphoid cells that were negative for CD3, CD5, and c-myc and positive for CD20 and bcl-2, leading to a diagnosis of diffuse large B-cell lymphoma. Here, we discuss the risk of malignancies, particularly malignant lymphoma in patients with IgG4-related disease. The importance of pathological analysis to reach the appropriate diagnosis in such cases should be emphasized.
authors.affiliation: Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Nishimura
authors.forename: Masaya
authors.initials: M
authors.lastname: Iwamuro
authors.forename: Kazuki
authors.initials: K
authors.lastname: Ocho
authors.forename: Kou
authors.initials: K
authors.lastname: Hasegawa
authors.forename: Kosuke
authors.initials: K
authors.lastname: Kimura
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Hanayama
authors.forename: Eisei
authors.initials: E
authors.lastname: Kondo
authors.forename: Takehiro
authors.initials: T
authors.lastname: Tanaka
authors.forename: Fumio
authors.initials: F
authors.lastname: Otsuka
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001327:Autoimmune Diseases / Q000150:complications*; D006801:Humans; D007074:Immunoglobulin G; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D010195:Pancreatitis / Q000150:complications* / Q000276:immunology*
chemical_list: D007074:Immunoglobulin G