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Mucosa-Associated Lymphoid Tissue Lymphoma

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https://www.readbyqxmd.com/read/29325249/-clinicopathologic-features-of-primary-hepatic-marginal-zone-lymphoma-of-mucosa-associated-lymphoid-tissue-and-hepatic-pseudolymphoma
#1
C Liu, X Li, H Li, Q X Gong, Y Li, Z Wang, Z H Zhang
Objective: To study the clinicopathological features of primary hepatic extranodal marginal zone lymphoma of mucosa associated lymphoid tissue (MALT lymphoma) and hepatic pseudolymphoma, and to discuss their differential diagnosis, treatment and prognosis. Methods: Three primary hepatic MALT lymphomas and two hepatic pseudolymphomas collected from January 2012 to March 2017 in the First Affiliated Hospital of Nanjing Medical University were evaluated by HE and immunohistochemistry(IHC), in-situ hybridization and immunoglobulin (Ig) gene rearrangement detection, and the relevant literature reviewed...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29302146/helicobacter-pylori-in-dyspepsia-phenotypic-and-genotypic-methods-of-diagnosis
#2
Vignesh Shetty, Mamatha Ballal, Girisha Balaraju, Shiran Shetty, Ganesh C Pai, Ramachandra Lingadakai
Background: Helicobacter pylori affects almost half of the world's population and therefore is one of the most frequent and persistent bacterial infections worldwide. H. pylori is associated with chronic gastritis, ulcer disease (gastric and duodenal), mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Several diagnostic methods exist to detect infection and the option of one method or another depends on various genes, such as availability, advantages and disadvantages of each method, monetary value, and the age of patients...
October 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/29296886/constitutive-ras-signaling-and-ink4a-arf-inactivation-cooperate-during-the-development-of-b-all-in-mice
#3
Tomasz Sewastianik, Meng Jiang, Kumar Sukhdeo, Sanjay S Patel, Kathryn Roberts, Yue Kang, Ahmad Alduaij, Peter S Dennis, Brian Lawney, Ruiyang Liu, Zeyuan Song, Jessie Xiong, Yunyu Zhang, Madeleine E Lemieux, Geraldine S Pinkus, Jeremy N Rich, David M Weinstock, Charles G Mullighan, Norman E Sharpless, Ruben D Carrasco
Despite recent advances in treatment, human precursor B-cell acute lymphoblastic leukemia (B-ALL) remains a challenging clinical entity. Recent genome-wide studies have uncovered frequent genetic alterations involving RAS pathway mutations and loss of the INK4A/ARF locus, suggesting their important role in the pathogenesis, relapse, and chemotherapy resistance of B-ALL. To better understand the oncogenic mechanisms by which these alterations might promote B-ALL and to develop an in vivo preclinical model of relapsed B-ALL, we engineered mouse strains with induced somatic KrasG12D pathway activation and/or loss of Ink4a/Arf during early stages of B-cell development...
November 28, 2017: Blood Advances
https://www.readbyqxmd.com/read/29260074/bilateral-orbital-marginal-zone-b-cell-lymphoma-of-the-mucosa-associated-lymphoid-tissue-in-a-patient-with-hepatitis-b-virus-infection
#4
Pei-Hsuan Lin, Yoshiyuki Kitaguchi, Jacqueline Mupas-Uy, Yasuhiro Takahashi, Hirohiko Kakizaki
Purpose: To report a case of marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) in the bilateral orbit with chronic hepatitis B virus (HBV) infection. Observations: A 72-year-old man with chronic HBV infection presented with a bilateral proptosis with slight restriction of ocular motility for 9 months. Computed tomographic images showed well-defined, isodense masses in the bilateral superolateral orbit. Magnetic resonance images showed isointense on T1-and hyperintense on T2-weighted images, with bilateral involvements of the lateral rectus muscles reaching the superior orbital fissures...
September 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29249756/-a-case-of-pertussis-in-adult-that-could-be-diagnosed-by-detection-of-bordetella-pertussis-from-sputum
#5
Ayano Usuba, Yuko Komase, Baku Oyama, Takahiro Tsuburai, Naoya Hida
Bordetella pertussis isolation by culture has low detection sensitivity for diagnosing pertussis; the diagnosis is confirmed by measuring serum anti-pertussis toxin (anti-PT) or anti-filamentous hemagglutinin antibody titers, and by genetic testing (polymerase chain reaction/loop-mediated isothermal amplification). Isolation of B. pertussis in adults is difficult, resulting in a delayed diagnosis, as a delayed cough may present ≥3 months after onset. Differentiation from bronchial asthma is also important...
2017: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/29228090/epstein-barr-virus-positive-extranodal-marginal-zone-lymphoma-of-bronchial-associated-lymphoid-tissue-in-the-posttransplant-setting-an-immunodeficiency-related-posttransplant-lymphoproliferative-disorder
#6
Daniel P Cassidy, Francisco Vega, Jennifer R Chapman
Objectives: Posttransplant lymphoproliferative disorders (PTLDs) are a heterogeneous group of hematolymphoid proliferations arising in the context of chronic immunosuppression. The common and indolent B-cell lymphomas, including extranodal marginal zone lymphomas (ENMZLs) of mucosa-associated lymphoid tissue (MALT), are excluded from the category of PTLD in the current World Health Organization classification. Methods: We report a case of Epstein-Barr virus (EBV)-positive bronchial-associated lymphoid tissue (BALT) lymphoma involving the lungs of a transplant patient...
December 7, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29225710/novel-developments-in-the-pathogenesis-and-diagnosis-of-extranodal-marginal-zone-lymphoma
#7
REVIEW
Max I Schreuder, Michiel van den Brand, Konnie M Hebeda, Patricia J T A Groenen, J Han van Krieken, Blanca Scheijen
Extranodal marginal zone lymphoma (EMZL), mostly represented by mucosa-associated lymphoid tissue (MALT) type, also referred to as MALT lymphoma, is a clinically heterogeneous entity within the group of low-grade B cell lymphomas that arises in a wide range of different extranodal sites, including the stomach, lung, ocular adnexa, and skin. It represents the third most common non-Hodgkin lymphoma in the Western world, and the median age of occurrence is around 60 years. One characteristic aspect in a subset of EMZL detectable in about 25% of the cases is the presence of specific chromosomal translocations involving the genes MALT1 and BCL10, which lead to activation of the NF-κB signaling pathway...
December 2017: Journal of Hematopathology
https://www.readbyqxmd.com/read/29199594/dna-double-strand-breaks-caused-by-different-microorganisms-a-special-focus-on-helicobacter-pylori
#8
Pinar Erkekoglu, Didem Oral, Belmar Kocer-Gumusel, Ming-Wei Chao
The association between inflammation and cancer has long been recognized. Several studies have found that different types of tumors develop at sites of chronic inflammation. It is stated that over 15%-20% of malignancies worldwide can be related to infections caused by viruses, bacteria, and schistosomes. Inflammatory conditions are characterized by overexpression of inducible nitric oxide synthase (iNOS) and overproduction of nitric oxide/reactive nitrogen species (ROSs/RNSs) in epithelial cells. Reactive oxygen species (ROSs) may also lead to cellular alterations and eventually to inflammation...
2017: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/29178090/-treatment-of-primary-gastric-lymphoma
#9
Yi Xia, Zhiwei Zhou
Stomach is the most common location of lymphoma in digestive tract, accounting for 50%-60% of gastrointestinal lymphomas. The most common histological types are low malignant mucosa-associated lymphoid tissue (MALT) lymphoma from non-Hodgkin lymphoma (NHL) and diffuse large B-cell and marginal zone B-cell lymphoma (DLBCL) from NHL. Chronic gastritis secondary to Helicobacter pylori(HP) infection has been considered a major predisposing factor for MALT lymphoma. At present, the most widely accepted initial therapy for localized disease is aimed at the eradication of HP using regimens combining antibiotics and proton-pump inhibitors...
November 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29165612/long-term-outcomes-of-107-cases-of-primary-thyroid-malt-lymphoma-at-a-single-medical-institution-in-japan
#10
Natsuko Watanabe, Hiroto Narimatsu, Jaeduk Yoshimura Noh, Kenji Iwaku, Yo Kunii, Nami Suzuki, Hidemi Ohye, Miho Suzuki, Masako Matsumoto, Ai Yoshihara, Kaori Kameyama, Kazuhiko Kobayashi, Masahiro Kami, Kiminori Sugino, Koichi Ito
Context: Thyroid mucosa-associated lymphoid tissue (MALT) lymphoma is a type of extranodal lymphoma with a favorable prognosis. Objective: To provide information on long-term outcomes that would facilitate establishment of the optimal management strategy for thyroid lymphoma. Design, Setting, and Participants: Medical records of 107 patients (median age 67 years, 20 males, 87 females) who were diagnosed with localized thyroid MALT lymphoma stage IE or IIE at Ito Hospital were retrospectively reviewed...
November 20, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29151525/achromobacter-infection-is-rare-in-japanese-patients-with-pulmonary-b-cell-lymphoma
#11
Satsuki Aoyama, Ayako Masaki, Yuma Sakamoto, Hisashi Takino, Takayuki Murase, Koichi Ohshima, Tadashi Yoshino, Seiichi Kato, Hiroshi Inagaki
Objective Achromobacter xylosoxidans (A. xylosoxidans) has been recently reported to have an association with the development of pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma in patients from European countries. However, the prevalence rates for A. xylosoxidans may vary significantly from country to country. To assess this association, the prevalence of A. xylosoxidans was analyzed in Japanese patients with pulmonary B-cell lymphoma. Methods DNA samples were obtained from formalin-fixed, paraffin-embedded sections of pulmonary MALT lymphomas (n=52), diffuse large B-cell lymphomas (DLBCLs, n=18), and benign pulmonary lesions (n=19)...
November 20, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29151299/eleven-patients-with-primary-thyroid-lymphoma-a-single-center-experience
#12
Hasan Bostancı, Kürşat Dikmen, Nalan Akyürek, Ahmet Çağrı Büyükkasap, Aydın Yavuz, Mehmet Muhittin Yalçın, Murat Akın
Background/aim: Primary thyroid lymphoma (PTL) is a very rare thyroid malignancy. It should be diagnosed and treated immediately and accurately. Our aim was to evaluate the diagnostic methods and treatment results for patients with PTL.Materials and methods: We retrospectively evaluated the records of 11 patients with PTL from 2009 to 2015, diagnosed at our institute. Age, sex, stage, histopathologic type, presence of Hashimoto's thyroiditis, diagnostic methods, treatment types, and recurrence were examined...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29138097/gastric-microbiota-an-emerging-player-in-helicobacter-pylori-induced-gastric-malignancies
#13
J Luis Espinoza, Ayumi Matsumoto, Hirokazu Tanaka, Itaru Matsumura
The complex diversity of nonpathogenic microbes that colonize the human body, known as microbiota, exert considerable effects on physiological homeostasis, and immune regulation. Helicobacter pylori (H. pylori) is a bacterium that frequently colonizes human stomach and is a major pathogenic agent for peptic ulcer diseases, gastric cancer, and mucosa-associated lymphoid tissue (MALT) lymphoma. Due to its acidic pH and peristaltic movements, the stomach has been considered a hostile environment for most microorganisms, however various commensal microorganisms are capable of colonizing the stomach to form a stomach niche...
November 11, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29132484/abdominal-ct-findings-in-patients-with-primary-lymphoma-causing-small-bowel-obstruction
#14
Elif Karadeli, Gurcan Erbay, Alper Parlakgumus, Hakan Yabanoglu
The purpose of this study was to investigate retrospectively CTfindings in patients with primary lymphoma causing small bowel obstruction. CTscans of 11 patients with small bowel lymphoma were separately analysed in terms of affected section of the small bowel, focality, wall thickness, pattern and degree of contrast enhancement, lymphadenopathy, organ involvement, perforation, and the presence of intraabdominal fluid. Eight patients had diffuse large B-cell lymphoma, and one patient each had marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT), T-cell lymphoma, and anaplastic T-cell lymphoma...
November 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29113392/chemotherapy-alone-is-an-alternative-treatment-in-treating-localized-primary-ocular-adnexal-lymphomas
#15
Wei-Li Ma, Ming Yao, Shu-Lang Liao, Jih-Luh Tang, Yao-Ching Wang, Sung-Hsin Kuo, Ann-Lii Cheng
This study investigated the treatment efficacy and long-term adverse effects of various treatment modalities for primary ocular adnexal lymphomas (POALs). We retrospectively reviewed 107 patients who received first-line chemotherapy, radiotherapy, and other treatment modalities from 1990 to 2015. Nighty-three (87%) patients were diagnosed with mucosa-associated lymphoid tissue (MALT) lymphoma, with the orbit being the most common site (49 patients, 46%). Among 91 patients with stage I-IIE1 disease, 26 underwent chemotherapy, 34 underwent radiotherapy, and 31 received other treatment modalities...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29110387/cholesterol-%C3%AE-glucosyltransferase-gene-is-present-in-most-helicobacter-species-including-gastric-non-helicobacter-pylori-helicobacters-obtained-from-japanese-patients
#16
Masatomo Kawakubo, Kazuki Horiuchi, Takehisa Matsumoto, Jun Nakayama, Taiji Akamatsu, Tsutomu Katsuyama, Hiroyoshi Ota, Junji Sagara
BACKGROUND: Non-Helicobacter pylori helicobacters (NHPHs) besides H. pylori infect human stomachs and cause chronic gastritis and mucosa-associated lymphoid tissue lymphoma. Cholesteryl-α-glucosides have been identified as unique glycolipids present in H. pylori and some Helicobacter species. Cholesterol-α-glucosyltransferase (αCgT), a key enzyme for the biosynthesis of cholesteryl-α-glucosides, plays crucial roles in the pathogenicity of H. pylori. Therefore, it is important to examine αCgTs of NHPHs...
November 7, 2017: Helicobacter
https://www.readbyqxmd.com/read/29109348/-a-case-of-gastric-follicular-lymphoma-resected-and-diagnosed-with-laparoscopy-and-endoscopy-cooperative-surgery
#17
Takuya Seike, Katsuhisa Inamura, Noriko Okuno, Yoshihide Asaumi, Yoshiko Takata, Toshiyuki Okamura, Sadaya Matano, Shintaro Terahata, Kohmei Sakatoku, Hiroshi Kawai
A woman in her 70s was diagnosed with a protruding mucosa-associated lymphoid tissue (MALT) lymphoma during a secondary health examination. After eradication of Helicobacter pylori, a biopsy revealed gastric follicular lymphoma (FL) and the lesion was still protruding one year later. (18)F-fluorodeoxyglucose positron emission tomography showed focal nodular hypermetabolic activity, suggesting that FL may have transformed into a diffuse large B-cell lymphoma. Upper gastrointestinal endoscopy, colonoscopy, and capsule endoscopy showed no other lesions in the gastrointestinal tract, and bone marrow biopsy showed no permeation into the marrow...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/29100365/the-value-of-detecting-immunoglobulin-gene-rearrangements-in-the-diagnosis-of-b-cell-lymphoma
#18
Can Lu, QiuYan He, Wei Zhu, ChunYan Fu, JianHua Zhou, YongGuang Tao, Shuang Liu, DeSheng Xiao
Objective: To discuss the clinical value of immunoglobulin gene rearrangements in the diagnosis of B-cell lymphoma. Methods: A total of 209 cases of B-cell lymphomas and 35 cases of reactive lymphoid hyperplasia were selected for DNA extraction and PCR amplification using the BIOMED-2 primer system. Gel electrophoresis of heteroduplexes was used to analyze immunoglobulin gene rearrangements. Results: A total of 209 cases of B-cell lymphoma, including 69 extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue, 63 diffuse large B-cell lymphomas, 39 follicular lymphomas, 15 small lymphocytic lymphomas, 6 plasmacytomas, 6 mantle cell lymphomas, 7 nodal marginal zone B-cell lymphomas, and 4 lymphoplasmacytoid lymphomas, were examined...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29058491/a-review-of-primary-thyroid-lymphoma-molecular-factors-diagnosis-and-management
#19
Efstathios T Pavlidis, Theodoros E Pavlidis
Purpose/aim: To focus on current aspects of primary thyroid lymphoma (PTL), which is a rare clinical entity usually manifested by a rapidly growing mass in the neck that can cause pressure symptoms. MATERIALS AND METHODS: Relevant papers in PubMed published through June 2017 were selected to track updated information about PTL with an emphasis on diagnosis and novel therapeutic management. RESULTS: The most frequent cases include non-Hodgkin lymphoma derived from B-cells, mainly diffuse large B-cell lymphoma (DLBCL) followed by mucosa-associated lymphoid tissue (MALT) lymphoma or a mixed type...
October 23, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29037024/treatment-outcome-and-risk-analysis-for-cataract-after-radiotherapy-of-localized-ocular-adnexal-mucosa-associated-lymphoid-tissue-malt-lymphoma
#20
Hee Hyun Park, Sea-Won Lee, Soo Yoon Sung, Byung Ock Choi
PURPOSE: We retrospectively reviewed the results of radiotherapy for localized ocular adnexal MALT lymphoma (OAML) to investigate the risk factors of cataract. METHODS: Sixty-seven patients with stage IE OAML treated with radiotherapy at Seoul St. Mary's Hospital from 2001 to 2016 were included. Median treatment dose was 30 Gy. Lens protection was done in 52 (76%) patients. Radiation therapy (RT) extent was as follows: superficial (82.1%), tumor mass (4.5%), and entire orbital socket (13...
September 2017: Radiation Oncology Journal
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