start-ver=1.4 cd-journal=joma no-vol=9 cd-vols= no-issue= article-no= start-page=761 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=2019124 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Up-regulation of activation-induced cytidine deaminase and its strong expression in extra- germinal centres in IgG4-related disease en-subtitle= kn-subtitle= en-abstract= kn-abstract=Immunoglobulin (Ig) G4-related disease (IgG4-RD) is a systemic disorder involving benign mass formation due to fibrosis and intense lymphoplasmacytosis; the chronic inflammation associated with the disease might also contribute to oncogenesis. Activation-induced cytidine deaminase (AID), normally expressed in germinal centre activated B-cells, is an enzyme that edits DNA/RNA and induces somatic hypermutation and Ig class switching. AID expression is strictly controlled under physiological conditions; however, chronic inflammation and some infectious agents induce its up-regulation. AID is overexpressed in various cancers and may be important in chronic inflammation-associated oncogenesis. We examined AID expression in IgG4-related sialadenitis (n = 14), sialolithiasis (nonspecific inflammation, n = 13), and normal submandibular glands (n = 13) using immunohistochemistry and quantitative real-time polymerase chain reaction (qPCR). Immunohistochemistry revealed significantly more AID-expressing cells in IgG4-related sialadenitis than in sialolithiasis or normal submandibular gland samples (P = 0.02 and P < 0.01, respectively); qPCR yielded similar results. Thus, AID was significantly more up-regulated and had higher expression in extra-germinal centres in IgG4-RD than in non-specific inflammation or normal conditions. This report suggests that IgG4-RD has several specific causes of AID up-regulation in addition to inflammation. Furthermore, chronic inflammation-associated AID-mediated oncogenesis is possible in IgG4-RD. en-copyright= kn-copyright= en-aut-name=GionYuka en-aut-sei=Gion en-aut-mei=Yuka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakeuchiMai en-aut-sei=Takeuchi en-aut-mei=Mai kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ShibataRei en-aut-sei=Shibata en-aut-mei=Rei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=Miyata-TakataTomoko en-aut-sei=Miyata-Takata en-aut-mei=Tomoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OritaYorihisa en-aut-sei=Orita en-aut-mei=Yorihisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TachibanaTomoyasu en-aut-sei=Tachibana en-aut-mei=Tomoyasu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Department of Pathology, Kurume University School of Medicine kn-affil= affil-num=3 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=4 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=5 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=6 en-affil=Department of Otolaryngology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=7 en-affil=Department of Otolaryngology, Himeji Red Cross Hospital kn-affil= affil-num=8 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= affil-num=9 en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences kn-affil= END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=5 article-no= start-page=301 end-page=306 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=201510 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Primary Duodenal Follicular Lymphoma Treated With Rituximab Monotherapy and Followed-up for 15 Years en-subtitle= kn-subtitle= en-abstract= kn-abstract=A 41-year-old woman was diagnosed with duodenal follicular lymphoma. She had no other lesions and was assigned to a "watch and wait" policy. Swelling of the inguinal lymph nodes appeared 45 months later, and rituximab monotherapy resulted in complete remission. However, follicular lymphoma recurred in the stomach, rectum and mesenteric and external iliac lymph nodes 81 months after the therapy. The patient received rituximab monotherapy again and has remained in complete remission in the fifteenth year after the initial diagnosis. This case suggests the usefulness of rituximab monotherapy in the long-term management of intestinal follicular lymphoma. en-copyright= kn-copyright= en-aut-name=SekiAnna en-aut-sei=Seki en-aut-mei=Anna kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=IwamuroMasaya en-aut-sei=Iwamuro en-aut-mei=Masaya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YoshiokaMasao en-aut-sei=Yoshioka en-aut-mei=Masao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=FujiiNobuharu en-aut-sei=Fujii en-aut-mei=Nobuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OkadaHiroyuki en-aut-sei=Okada en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NoseSoichiro en-aut-sei=Nose en-aut-mei=Soichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=YamamotoKazuhide en-aut-sei=Yamamoto en-aut-mei=Kazuhide kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=Department of Internal Medicine, Okayama Saiseikai General Hospital affil-num=2 en-affil= kn-affil=Department of Molecular Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=3 en-affil= kn-affil=Department of Internal Medicine, Okayama Saiseikai General Hospital affil-num=4 en-affil= kn-affil=Department of Hematology and Oncology, Okayama University Hospital affil-num=5 en-affil= kn-affil=Department of Endoscopy, Okayama University Hospital affil-num=6 en-affil= kn-affil=Department of Anatomic Pathology, Okayama Saiseikai General Hospital affil-num=7 en-affil= kn-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=8 en-affil= kn-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=9 en-affil= kn-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences en-keyword=follicular lymphoma kn-keyword=follicular lymphoma en-keyword=duodenum kn-keyword=duodenum en-keyword=rituximab kn-keyword=rituximab END start-ver=1.4 cd-journal=joma no-vol=69 cd-vols= no-issue=1 article-no= start-page=37 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=201502 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Magnified Endoscopic Features of Duodenal Follicular Lymphoma and Other Whitish Lesions en-subtitle= kn-subtitle= en-abstract= kn-abstract=The sensitivity and specificity of magnified endoscopic features for differentiating follicular lymphoma from other diseases with duodenal whitish lesions have never been investigated. Here we compared the magnified endoscopic features of duodenal follicular lymphoma with those of other whitish lesions. We retrospectively reviewed the cases of patients with follicular lymphoma (n＝9), lymphangiectasia (n＝7), adenoma (n＝10), duodenitis (n＝4), erosion (n＝1), lymphangioma (n＝1), and hyperplastic polyp (n＝1). The magnified features of the nine follicular lymphomas included enlarged villi (n＝8), dilated microvessels (n＝5), and opaque white spots of various sizes (n＝9). The lymphangiectasias showed enlarged villi, dilated microvessels, and white spots, but the sizes of the white spots were relatively homogeneous and their margin was clear. Observation of the adenoma and duodenitis revealed only whitish villi. Although the lymphangioma was indistinguishable from the follicular lymphomas by magnified features, it was easily diagnosed based on the macroscopic morphology. In conclusion, magnified endoscopic features, in combination with macroscopic features, are useful for differentiating follicular lymphomas from other duodenal diseases presenting whitish lesions. en-copyright= kn-copyright= en-aut-name=IwamuroMasaya en-aut-sei=Iwamuro en-aut-mei=Masaya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OkadaHiroyuki en-aut-sei=Okada en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KawaiYoshinari en-aut-sei=Kawai en-aut-mei=Yoshinari kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KawanoSeiji en-aut-sei=Kawano en-aut-mei=Seiji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=NasuJunichiro en-aut-sei=Nasu en-aut-mei=Junichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=KawaharaYoshiro en-aut-sei=Kawahara en-aut-mei=Yoshiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=TanakaTakehiro en-aut-sei=Tanaka en-aut-mei=Takehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=YamamotoKazuhide en-aut-sei=Yamamoto en-aut-mei=Kazuhide kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= affil-num=1 en-affil= kn-affil=Department of Molecular Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=2 en-affil= kn-affil=Department of Endoscopy, Okayama University Hospital affil-num=3 en-affil= kn-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=4 en-affil= kn-affil=Department of Gastroenterology, Onomichi Municipal Hospital affil-num=5 en-affil= kn-affil=Department of Endoscopy, Okayama University Hospital affil-num=6 en-affil= kn-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=7 en-affil= kn-affil=Department of Endoscopy, Okayama University Hospital affil-num=8 en-affil= kn-affil=Department of Pathology, Okayama University Hospital affil-num=9 en-affil= kn-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences affil-num=10 en-affil= kn-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences en-keyword=duodenal neoplasm kn-keyword=duodenal neoplasm en-keyword=follicular lymphoma kn-keyword=follicular lymphoma en-keyword=gastrointestinal lymphoma kn-keyword=gastrointestinal lymphoma en-keyword=magnifying endoscopy kn-keyword=magnifying endoscopy END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue=7 article-no= start-page=1379 end-page=1387 dt-received= dt-revised= dt-accepted= dt-pub-year=2014 dt-pub=201407 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Low-grade B-cell lymphoma presenting primarily in the bone marrow en-subtitle= kn-subtitle= en-abstract= kn-abstract=Cases of low-grade B-cell lymphoma presenting primarily in the bone marrow are rare, and its clinicopathology remains unclear. We retrospectively examined patients with low-grade B-cell lymphoma presenting primarily in the bone marrow. Fourteen patients met the inclusion criteria, including 5 with lymphoplasmacytic lymphoma (LPL), 3 with chronic lymphocytic leukemia/small lymphocytic lymphoma, 2 with follicular lymphoma (FL), and 4 with low-grade B-cell lymphoma not otherwise specified (LGBCL-NOS). The median age was 69.5 years (range, 42-89 years), and a slight male predominance was noted (9 men and 5 women, 1.8: 1). Immunohistochemically, all cases were positive for CD20. One case was positive for CD138. Both cases of FL were positive for CD10 and B-cell lymphoma 2 (BCL-2), and immunoglobulin heavy locus (IgH)/B-cell lymphoma 2 rearrangement was observed by fluorescence in situ hybridization. The myeloid differentiation primary response gene (88) leucine to proline mutation was observed in 3 of 5 LPL, 1 of 2 FL, and 2 of 4 LGBCL-NOS patients. Paraproteinemia was observed in 10 patients; IgM and IgG paraproteinemia were observed in 6 and 3 patients, respectively. In this patient series, 3 patients had died at a median follow-up of 36.5 months; the cause of death of 1 LPL patient was malignant lymphoma itself. Thus, low-grade B-cell lymphoma presenting primarily in the bone marrow has various subtypes, and approximately one-third of the patients had LGBCL-NOS. The immunophenotypic features and myeloid differentiation primary response gene (88) leucine to proline mutation data of LGBCL-NOS suggested that some cases present with characteristics similar to those of LPL or marginal zone lymphoma. en-copyright= kn-copyright= en-aut-name=IwataniKayoko en-aut-sei=Iwatani en-aut-mei=Kayoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=Miyata-TakataTomoko en-aut-sei=Miyata-Takata en-aut-mei=Tomoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=IwakiNoriko en-aut-sei=Iwaki en-aut-mei=Noriko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=CuiWei en-aut-sei=Cui en-aut-mei=Wei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=Sawada-KitamuraSeiko en-aut-sei=Sawada-Kitamura en-aut-mei=Seiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=SonobeHiroshi en-aut-sei=Sonobe en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=TamuraMaiko en-aut-sei=Tamura en-aut-mei=Maiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=SaitoKatsuhiko en-aut-sei=Saito en-aut-mei=Katsuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=MiyataniKatsuya en-aut-sei=Miyatani en-aut-mei=Katsuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=YamasakiRie en-aut-sei=Yamasaki en-aut-mei=Rie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=YamadoriIchiro en-aut-sei=Yamadori en-aut-mei=Ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=FujiiNobuharu en-aut-sei=Fujii en-aut-mei=Nobuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=TerasakiYasushi en-aut-sei=Terasaki en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= en-aut-name=MaedaYoshinobu en-aut-sei=Maeda en-aut-mei=Yoshinobu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=16 ORCID= en-aut-name=TanimotoMitsune en-aut-sei=Tanimoto en-aut-mei=Mitsune kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=17 ORCID= en-aut-name=NakamuraNaoya en-aut-sei=Nakamura en-aut-mei=Naoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=18 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=19 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=2 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=3 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=4 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=5 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=6 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=7 en-affil= kn-affil=Kanazawa Univ Hosp, Div Pathol affil-num=8 en-affil= kn-affil=Chugoku Cent Hosp, Div Pathol affil-num=9 en-affil= kn-affil=Hiroshima City Hosp, Div Pathol affil-num=10 en-affil= kn-affil=Toyama City Hosp, Dept Pathol affil-num=11 en-affil= kn-affil=Mitoyo Gen Hosp, Div Pathol affil-num=12 en-affil= kn-affil=Natl Hosp Org Iwakuni, Ctr Clin, Div Pathol affil-num=13 en-affil= kn-affil=Natl Hosp Org Okayama, Med Ctr, Div Pathol affil-num=14 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Hematol & Oncol affil-num=15 en-affil= kn-affil=Toyama City Hosp, Div Hematol affil-num=16 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Hematol & Oncol affil-num=17 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Hematol & Oncol affil-num=18 en-affil= kn-affil=Tokai Univ, Inst Med Sci, Dept Pathol affil-num=19 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol en-keyword=Low-grade B cell lymphoma kn-keyword=Low-grade B cell lymphoma en-keyword=Bone marrow kn-keyword=Bone marrow en-keyword=LGBCL-NOS kn-keyword=LGBCL-NOS en-keyword=MYD88 kn-keyword=MYD88 END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=2 article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130213 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A20 (TNFAIP3) Deletion in Epstein-Barr Virus-Associated Lymphoproliferative Disorders/Lymphomas en-subtitle= kn-subtitle= en-abstract= kn-abstract=A negative regulator of the nuclear factor (NF)-kappa B pathway, A20 (TNFAIP3), is inactivated in several types of lymphomas; particularly in diffuse large B-cell lymphoma (DLBCL), classical Hodgkin's lymphoma, and extranodal marginal zone lymphoma of the mucosa-associated lymphoid tissue. These findings suggest that the NF-kappa B activation is related to A20 inactivation. Recently, A20 inactivation has also been observed in Epstein-Barr virus (EBV)-related lymphomas; however, this occurrence has not been well investigated. Moreover, NF-kappa B is a key molecule in activated B-cell-like (ABC)-type DLBCL; EBV-associated DLBCL is of the ABC type. Therefore, we focused on A20 deletions in EBV-associated lymphoproliferative disorders/lymphomas. Using fluorescent in situ hybridization analysis, A20 deletions were identified in 4 of 13 samples from patients with pyothorax-associated lymphoma (PAL) (31%), 3 of 20 samples from nasal-type NK/T cell lymphomas (NKTLs) (15%), 1 of 8 samples of EBV-positive DLBCL of the elderly (DLBCL-e) (13%), but not in any of the 11 samples from individuals with methotrexate-related lymphoproliferative disorder (MTX-LPD) (0%). Among the samples with A20 deletions, EBV latent membrane protein 1 (LMP-1) expression was detected in all 4 of the PAL samples with A20 deletions and in the DLBCL-e sample with an A20 deletion, but not in any of the 3 NKTL samples. This finding indicated that A20 deletions were not directly related to the EBV latency pattern of lymphomas, although such deletions might be related to the diagnostic category. Immunohistologically, the A20 protein was absent in 2 (15%) of the13 PAL samples, 1 (9%) of 11 MTX-LPD samples, and in none of the 20 NKTL (0%) or 8 DLBCL-e samples. In conclusion, A20 deletion and/or dysfunctional expression are frequently associated with PALs, and A20 abnormalities may be related to the pathogenesis of PAL. en-copyright= kn-copyright= en-aut-name=AndoMidori en-aut-sei=Ando en-aut-mei=Midori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NomotoJunko en-aut-sei=Nomoto en-aut-mei=Junko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakamuraShigeo en-aut-sei=Nakamura en-aut-mei=Shigeo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OhshimaKoichi en-aut-sei=Ohshima en-aut-mei=Koichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TakeuchiTamotsu en-aut-sei=Takeuchi en-aut-mei=Tamotsu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=OritaYorihisa en-aut-sei=Orita en-aut-mei=Yorihisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=KobayashiYukio en-aut-sei=Kobayashi en-aut-mei=Yukio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=2 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=3 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=4 en-affil= kn-affil=Natl Canc Ctr, Div Hematol affil-num=5 en-affil= kn-affil=Nagoya Univ Hosp, Dept Pathol & Clin Lab affil-num=6 en-affil= kn-affil=Kurume Univ, Sch Med, Dept Pathol affil-num=7 en-affil= kn-affil=Gifu Univ, Grad Sch Med, Dept Immunopathol affil-num=8 en-affil= kn-affil=Okayama Univ, Dept Otolaryngol Head & Neck Surg, Grad Sch Med Dent & Pharmaceut Sci affil-num=9 en-affil= kn-affil=Natl Canc Ctr, Div Hematol affil-num=10 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci END start-ver=1.4 cd-journal=joma no-vol=463 cd-vols= no-issue=5 article-no= start-page=697 end-page=711 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201311 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=In aggressive variants of non-Hodgkin lymphomas, Ezh2 is strongly expressed and polycomb repressive complex PRC1.4 dominates over PRC1.2 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Polycomb group (PcG) proteins are important for the regulation of hematopoiesis by regulating chromatin compaction and silencing genes related to differentiation and cell cycle. Overexpression of enhancer of zeste homologue 2 (Ezh2) and Bmi-1/PCGF4 has been implicated in solid organ cancers, while Mel-18/PCGF2 has been reported as a tumor suppressor. Detailed expression profiles of PcG proteins and their diagnostic significance in malignant lymphomas are still unknown. In this study, we analyzed the expression levels of Ezh2, Bmi-1, Mel-18, and Ki67 in 197 Hodgkin's and non-Hodgkin's lymphoma patient samples and in lymphoma cell lines using immunohistochemistry, fluorescent immunocytochemistry, and Western blotting. Immunohistochemical staining showed that Ezh2 expression was significantly increased in aggressive compared to indolent subtypes of B cell neoplasms (P = 0.000-0.030), while no significant differences in Bmi-1 expression were found between these subtypes. Compared to the normal counterpart, T cell lymphomas showed significant overexpression of Bmi-1 (P = 0.011) and Ezh2 (P = 0.000). The Ki67 labeling index showed a positive correlation with Ezh2 expression in B cell lymphomas (correlation coefficient (Co) = 0.983, P = 0.000) and T/NK cell lymphomas (Co = 0.629, P = 0.000). Fluorescent immunohistochemical staining showed coexpression of Ezh2 and Ki67 in the same tumor cells, indicating that Ezh2 expression correlates with cell proliferation. Both B and T/NK cell neoplasms showed low expression of Mel-18 and high expression of both Bmi-1 and Ezh2. In conclusion, in aggressive lymphoma variants, Ezh2 is strongly expressed and polycomb repressive complex PRC1.4 dominates over PRC1.2. Coexpression of Bmi-1 and Ezh2 is a characteristic of aggressive lymphomas. Ezh2 correlates with the proliferation and aggressive nature of non-Hodgkin's lymphomas. en-copyright= kn-copyright= en-aut-name=Abd Al KaderLamia en-aut-sei=Abd Al Kader en-aut-mei=Lamia kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OkaTakashi en-aut-sei=Oka en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SunXu en-aut-sei=Sun en-aut-mei=Xu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=SatoHiaki en-aut-sei=Sato en-aut-mei=Hiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=MurakamiIchiro en-aut-sei=Murakami en-aut-mei=Ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TojiTomohiro en-aut-sei=Toji en-aut-mei=Tomohiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=ManabeAkihiro en-aut-sei=Manabe en-aut-mei=Akihiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=KimuraHiroshi en-aut-sei=Kimura en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=2 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=3 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=4 en-affil= kn-affil=Dalian Med Univ, Dept Pathol, Affiliated Hosp 1 affil-num=5 en-affil= kn-affil=Okayama Univ, Dept Med Technol, Grad Sch Hlth Sci affil-num=6 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=7 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=8 en-affil= kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci affil-num=9 en-affil= kn-affil=Osaka Univ, Grad Sch Frontier Sci affil-num=10 en-affil=D kn-affil=Okayama Univ, Dept Pathol, Grad Sch Med Dent & Pharmaceut Sci en-keyword=Ezh2 kn-keyword=Ezh2 en-keyword=Bmi-1 kn-keyword=Bmi-1 en-keyword=Mel-18 kn-keyword=Mel-18 en-keyword=Malignant lymphoma kn-keyword=Malignant lymphoma en-keyword=PRC1.2 kn-keyword=PRC1.2 en-keyword=PRC1.4 kn-keyword=PRC1.4 END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue=9 article-no= start-page=1927 end-page=1936 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201309 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Distinct morphologic, phenotypic, and clinical-course characteristics of indolent peripheral T-cell lymphoma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS) consists of a heterogeneous group of lymphomas. Patients. generally show an aggressive clinical course and very poor outcome. Although the 2008 World Health Organization classification of PTCL-NOS includes 3 variants, low-grade lymphoma is not Included. Of 277 PTCL-NOS cases recorded in our consultation files, we examined the clinicopathologic characteristics of 10 patients with T-cell lymphomas composed of small-sized cells with slight nuclear atypia. Eight patients showed extranodal involvement (5 patients, spleen; 3 patients, thyroid), and 5 patients were at clinical stage I or II. Histologically, all samples presented diffuse infiltrate of small lymphoid cells, with few mitotic figures. Immunohistologically, all samples were positive for CD3, and CD:20 Was detected in 5 samples. All samples showed a low Ki-67 labeling index (mean, 1.05%), and 7 samples were positive for central memory T-cell markers. Clonal T-cell receptor gamma chain and/or alpha-beta chain gene rearrangements were detected in all 10 patients. Five patients received chemotherapy, whereas for 3 patients, treatment consisted only of observation following surgical resection of the spleen or thyroid. Nine patients were alive at a median follow-up time of 19.5 months, whereas 1 patient died of an unrelated disease. The present study strongly indicates that T-cell lymphoma with small-sized lymphoma cells and a low Ki-67 labeling index is a distinct variant. Recognition of this novel lymphoma subtype, which should not be defined merely as PTCL-NOS, should be seriously considered. en-copyright= kn-copyright= en-aut-name=HayashiEiko en-aut-sei=Hayashi en-aut-mei=Eiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TashiroYukie en-aut-sei=Tashiro en-aut-mei=Yukie kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TachiyamaYoshiro en-aut-sei=Tachiyama en-aut-mei=Yoshiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=Sawada-KitamuraSeiko en-aut-sei=Sawada-Kitamura en-aut-mei=Seiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=HiramatsuYasushi en-aut-sei=Hiramatsu en-aut-mei=Yasushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=SugiguchiShun en-aut-sei=Sugiguchi en-aut-mei=Shun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= en-aut-name=NoseSoichiro en-aut-sei=Nose en-aut-mei=Soichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=9 ORCID= en-aut-name=HirokawaMitsuyoshi en-aut-sei=Hirokawa en-aut-mei=Mitsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=10 ORCID= en-aut-name=AndoMidori en-aut-sei=Ando en-aut-mei=Midori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=11 ORCID= en-aut-name=Abd MaderLamia en-aut-sei=Abd Mader en-aut-mei=Lamia kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=12 ORCID= en-aut-name=MaedaYoshinobu en-aut-sei=Maeda en-aut-mei=Yoshinobu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=13 ORCID= en-aut-name=TanimotoMitsune en-aut-sei=Tanimoto en-aut-mei=Mitsune kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=14 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=15 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=2 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=3 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=4 en-affil= kn-affil=Imakiire Gen Hosp, Dept Pathol affil-num=5 en-affil= kn-affil=Hiroshima Nishi Med Ctr, Div Pathol affil-num=6 en-affil= kn-affil=Kanazawa Univ Hosp, Div Pathol affil-num=7 en-affil= kn-affil=Himeji Red Cross Hosp, Dept Hematol & Oncol affil-num=8 en-affil= kn-affil=Tonami Gen Hosp, Dept Pathol affil-num=9 en-affil= kn-affil=Okayama Saiseikai Gen Hosp, Dept Pathol affil-num=10 en-affil= kn-affil=Kuma Hosp, Dept Diagnost Pathol affil-num=11 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=12 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=13 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Hematol & Oncol affil-num=14 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Hematol & Oncol affil-num=15 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol en-keyword=Indolent PTCL kn-keyword=Indolent PTCL en-keyword=CD20 kn-keyword=CD20 en-keyword=Ki-67 kn-keyword=Ki-67 en-keyword=Memory T cell kn-keyword=Memory T cell en-keyword=Good prognosis kn-keyword=Good prognosis END start-ver=1.4 cd-journal=joma no-vol=8 cd-vols= no-issue=2 article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Clinicopathologic Analysis of Localized Nasal/Paranasal Diffuse Large B-Cell Lymphoma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Diffuse large B-cell lymphoma (DLBCL) comprises 2 molecularly distinct subgroups of non-germinal center B-cell-like (non-GCB) and germinal center B-cell-like (GCB) DLBCLs, with the former showing relatively poor prognosis. In the present study, we analyzed the clinicopathological features of 39 patients with localized nasal/paranasal DLBCL. Immunohistochemistry-based subclassification revealed that 11 patients (28%) were of the GCB-type according to Hans' algorithm and 11 (28%) were of the GCB-type according to Choi's algorithm. According to both Hans' and Choi's algorithms, the non-GCB type was predominant. Nevertheless, prognosis was good. Overall survival did not differ significantly between the GCB and non-GCB subgroups (Hans' algorithm: p = 0.57, Choi's algorithm: p = 0.99). Furthermore, the prognosis of localized nasal/paranasal DLBCL was better than that of other localized extranodal DLBCLs. The prognosis of extranodal DLBCL is usually considered poorer than that of nodal DLBCL. However, in our study, no difference was noted between patients with localized nasal/paranasal DLBCL and patients with localized nodal DLBCL. In conclusion, although the non-GCB subtype is thought to show poor prognosis, in our study, the prognosis for localized nasal/paranasal DLBCL patients was good irrespective of subclassification. en-copyright= kn-copyright= en-aut-name=TodaHiroko en-aut-sei=Toda en-aut-mei=Hiroko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OritaYorihisa en-aut-sei=Orita en-aut-mei=Yorihisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=AsanoNaoko en-aut-sei=Asano en-aut-mei=Naoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=2 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=3 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=4 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Otolaryngol Head & Neck Surg affil-num=5 en-affil= kn-affil=Nagoya Univ Hosp, Dept Clin Lab affil-num=6 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol END start-ver=1.4 cd-journal=joma no-vol=125 cd-vols= no-issue=2 article-no= start-page=103 end-page=107 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Duodenal follicular lymphoma lacks AID but expresses BACH2 and has memory B cell characteristics kn-title=十二指腸濾胞性リンパ腫はAIDの発現を欠くがBACH2の発現を有しmemoryB細胞としての性質を有する en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name=高田尚良 kn-aut-sei=高田 kn-aut-mei=尚良 aut-affil-num=1 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name=佐藤康晴 kn-aut-sei=佐藤 kn-aut-mei=康晴 aut-affil-num=2 ORCID= en-aut-name=NakamuraNaoya en-aut-sei=Nakamura en-aut-mei=Naoya kn-aut-name=中村直哉 kn-aut-sei=中村 kn-aut-mei=直哉 aut-affil-num=3 ORCID= en-aut-name=TokunakaMami en-aut-sei=Tokunaka en-aut-mei=Mami kn-aut-name=徳中摩美 kn-aut-sei=徳中 kn-aut-mei=摩美 aut-affil-num=4 ORCID= en-aut-name=MikiYukari en-aut-sei=Miki en-aut-mei=Yukari kn-aut-name=三木由香里 kn-aut-sei=三木 kn-aut-mei=由香里 aut-affil-num=5 ORCID= en-aut-name=KikutiYara Yukie en-aut-sei=Kikuti en-aut-mei=Yara Yukie kn-aut-name=菊池イアーラ幸江 kn-aut-sei=菊池 kn-aut-mei=イアーラ幸江 aut-affil-num=6 ORCID= en-aut-name=IgarashiKazuhiko en-aut-sei=Igarashi en-aut-mei=Kazuhiko kn-aut-name=五十嵐和彦 kn-aut-sei=五十嵐 kn-aut-mei=和彦 aut-affil-num=7 ORCID= en-aut-name=ItoEtsuro en-aut-sei=Ito en-aut-mei=Etsuro kn-aut-name=伊藤悦郎 kn-aut-sei=伊藤 kn-aut-mei=悦郎 aut-affil-num=8 ORCID= en-aut-name=HarigaeHideo en-aut-sei=Harigae en-aut-mei=Hideo kn-aut-name=張替秀雄 kn-aut-sei=張替 kn-aut-mei=秀雄 aut-affil-num=9 ORCID= en-aut-name=KatoSeiichi en-aut-sei=Kato en-aut-mei=Seiichi kn-aut-name=加藤省一 kn-aut-sei=加藤 kn-aut-mei=省一 aut-affil-num=10 ORCID= en-aut-name=HayashiEiko en-aut-sei=Hayashi en-aut-mei=Eiko kn-aut-name=林詠子 kn-aut-sei=林 kn-aut-mei=詠子 aut-affil-num=11 ORCID= en-aut-name=OkaTakashi en-aut-sei=Oka en-aut-mei=Takashi kn-aut-name=岡剛史 kn-aut-sei=岡 kn-aut-mei=剛史 aut-affil-num=12 ORCID= en-aut-name=HoshiiYoshinobu en-aut-sei=Hoshii en-aut-mei=Yoshinobu kn-aut-name=星井嘉信 kn-aut-sei=星井 kn-aut-mei=嘉信 aut-affil-num=13 ORCID= en-aut-name=TariAkira en-aut-sei=Tari en-aut-mei=Akira kn-aut-name=田利晶 kn-aut-sei=田利 kn-aut-mei=晶 aut-affil-num=14 ORCID= en-aut-name=OkadaHiroyuki en-aut-sei=Okada en-aut-mei=Hiroyuki kn-aut-name=岡田裕之 kn-aut-sei=岡田 kn-aut-mei=裕之 aut-affil-num=15 ORCID= en-aut-name=MohamadoABD Alkader Lamia en-aut-sei=Mohamado en-aut-mei=ABD Alkader Lamia kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=16 ORCID= en-aut-name=MaedaYoshinobu en-aut-sei=Maeda en-aut-mei=Yoshinobu kn-aut-name=前田嘉信 kn-aut-sei=前田 kn-aut-mei=嘉信 aut-affil-num=17 ORCID= en-aut-name=TanimotoMitsune en-aut-sei=Tanimoto en-aut-mei=Mitsune kn-aut-name=谷本光音 kn-aut-sei=谷本 kn-aut-mei=光音 aut-affil-num=18 ORCID= en-aut-name=KinoshitaTomohiro en-aut-sei=Kinoshita en-aut-mei=Tomohiro kn-aut-name=木下朝博 kn-aut-sei=木下 kn-aut-mei=朝博 aut-affil-num=19 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name=吉野正 kn-aut-sei=吉野 kn-aut-mei=正 aut-affil-num=20 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理学（腫瘍病理） affil-num=2 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科病理学（腫瘍病理） affil-num=3 en-affil= kn-affil=東海大学医学部　病理診断学講座 affil-num=4 en-affil= kn-affil=東海大学医学部　病理診断学講座 affil-num=5 en-affil= kn-affil=香川保健医療短期大学 affil-num=6 en-affil= kn-affil=東海大学医学部　病理診断学講座 affil-num=7 en-affil= kn-affil=東北大学大学院医学系研究科 生物化学分野 affil-num=8 en-affil= kn-affil=弘前大学医学部　小児科学 affil-num=9 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 血液・免疫病学分野 affil-num=10 en-affil= kn-affil=名古屋大学病院　病理部 affil-num=11 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理学（腫瘍病理） affil-num=12 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理学（腫瘍病理） affil-num=13 en-affil= kn-affil=山口大学医学部　病理学 affil-num=14 en-affil= kn-affil=広島赤十字・原爆病院　消化器内科 affil-num=15 en-affil= kn-affil=岡山大学病院　光学診療部 affil-num=16 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理学（腫瘍病理） affil-num=17 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科血液・腫瘍・呼吸器内科学 affil-num=18 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科血液・腫瘍・呼吸器内科学 affil-num=19 en-affil= kn-affil=愛知がんセンター　血液細胞療法部 affil-num=20 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理学（腫瘍病理） en-keyword=follicular lymphoma kn-keyword=follicular lymphoma en-keyword=gastrointestinal tract kn-keyword=gastrointestinal tract en-keyword=BACH2 kn-keyword=BACH2 en-keyword=memory B cell kn-keyword=memory B cell END start-ver=1.4 cd-journal=joma no-vol=57 cd-vols= no-issue=1 article-no= start-page=84 end-page=90 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=2013 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Usefulness of Immunoglobulin Light-Chain Restriction on Immunocytochemical Double Staining for the Cytological Diagnosis of B Cell Non-Hodgkin's Lymphoma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Objective: We examined the usefulness of light-chain restriction (LCR) on immunocytochemical double staining (IDS) for cytological diagnosis. Study Design: We investigated LCR on IDS in 40 patients with proliferative lymphatic disorders (23 with B cell lymphoma, 13 with reactive lymphoid lesions, 2 with T cell lymphoma and 2 with Hodgkin's lymphoma). In addition, the results of flow cytometry (FCM) were compared in 34 of these patients. Results: On IDS, LCR was detected in 21 of 23 patients (91.3%) with B cell lymphoma. On FCM, it was detected in 15 of 21 patients (71.4%) with B cell lymphoma. Neither IDS nor FCM showed LCR in any patients with reactive lesions, T cell lymphoma or Hodgkin's lymphoma. Conclusion: IDS facilitated the detection of LCR with a single specimen under morphological observation. The application of this procedure may improve the accuracy of cytological diagnosis. en-copyright= kn-copyright= en-aut-name=ShimouraYasumasa en-aut-sei=Shimoura en-aut-mei=Yasumasa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SatoYasuharu en-aut-sei=Sato en-aut-mei=Yasuharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OritaYorihisa en-aut-sei=Orita en-aut-mei=Yorihisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakamuraSatoko en-aut-sei=Nakamura en-aut-mei=Satoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ManoShyouhe en-aut-sei=Mano en-aut-mei=Shyouhe kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=Kagawa Prefectural Cent Hosp, Clin Lab, Dept Pathol affil-num=2 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=3 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol affil-num=4 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Otolaryngol Head & Neck Surg affil-num=5 en-affil= kn-affil=Kagawa Prefectural Cent Hosp, Clin Lab, Dept Pathol affil-num=6 en-affil= kn-affil=Kagawa Prefectural Cent Hosp, Clin Lab, Dept Pathol affil-num=7 en-affil= kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Pathol en-keyword=Cytology kn-keyword=Cytology en-keyword=Immunocytochemical kn-keyword=Immunocytochemical en-keyword=double staining kn-keyword=double staining en-keyword=Immunoglobulin light-chain restriction kn-keyword=Immunoglobulin light-chain restriction en-keyword=Lymph node kn-keyword=Lymph node en-keyword=B cell lymphoma kn-keyword=B cell lymphoma en-keyword=Flow cytometry kn-keyword=Flow cytometry END start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20100325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=十二指腸濾胞性リンパ腫はongoingな体細胞突然変異を有するにも関わらずactivation- induced cytidine deaminaseと濾胞樹状細胞を欠く点において節性の濾胞性リンパ腫とは明確に異なる kn-title=Duodenal and nodal follicular lymphomas are distinct: the former lacks activation-induced cytidine deaminase and follicular dendritic cells despite ongoing somatic hypermutations en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name=田尚良 kn-aut-sei=田 kn-aut-mei=尚良 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=119 cd-vols= no-issue=3 article-no= start-page=323 end-page=325 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=20080104 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Epigenetics kn-title=エピジェネティクス en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=TakataKatsuyoshi en-aut-sei=Takata en-aut-mei=Katsuyoshi kn-aut-name=高田尚良 kn-aut-sei=高田 kn-aut-mei=尚良 aut-affil-num=1 ORCID= en-aut-name=YoshinoTadashi en-aut-sei=Yoshino en-aut-mei=Tadashi kn-aut-name=吉野正 kn-aut-sei=吉野 kn-aut-mei=正 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理・病態学 affil-num=2 en-affil= kn-affil=岡山大学大学院医歯薬学総合研究科 病理・病態学 END