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B-cell lymphoma

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https://www.readbyqxmd.com/read/29684805/detecting-a-rare-composite-small-bowel-lymphoma-by-magnetic-resonance-imaging-coincidentally-a-case-report-with-radiological-surgical-and-histopathological-features
#1
M Pezzella, B Brogna, A Romano, F Torelli, G Esposito, M Petrillo, F M Romano, N Di Martino, A Reginelli, R Grassi
INTRODUCTION: Diagnosing lymphoma continues to prove challenging in the clinical practice. Composite lymphoma (CL) is defined by the coexistence of different lymphoma subtypes in the same anatomical location. This condition has seldom been witnessed in the gastrointestinal (GI) tract. We weren't able to find previous cases in the literature about small bowel CL with follicular lymphoma (FL) and classical Hodgkin lymphoma (CHL). Surgery is the treatment of choice to obtain accurate histology, to manage and prevent acute complications...
April 16, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29683438/visualizing-the-actin-and-microtubule-cytoskeletons-at-the-b-cell-immune-synapse-using-stimulated-emission-depletion-sted-microscopy
#2
Jia C Wang, Madison Bolger-Munro, Michael R Gold
B cells that bind to membrane-bound antigens (e.g., on the surface of an antigen-presenting cell) form an immune synapse, a specialized cellular structure that optimizes B-cell receptor (BCR) signaling and BCR-mediated antigen acquisition. Both the remodeling of the actin cytoskeleton and the reorientation of the microtubule network towards the antigen contact site are essential for immune synapse formation. Remodeling of the actin cytoskeleton into a dense peripheral ring of F-actin is accompanied by polarization of the microtubule-organizing center towards the immune synapse...
April 9, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29682647/reversibly-disulfide-cross-linked-micelles-improve-the-pharmacokinetics-and-facilitate-the-targeted-on-demand-delivery-of-doxorubicin-in-the-treatment-of-b-cell-lymphoma
#3
Kai Xiao, Qiangqiang Liu, Nasir Al Awwad, Hongyong Zhang, Li Lai, Yan Luo, Joyce S Lee, Yuanpei Li, Kit S Lam
Doxorubicin (DOX) is commonly used to treat human malignancies, and its efficacy can be maximized by limiting the cardiac toxicity when combined with nanoparticles. Here, we reported a unique type of reversibly disulfide cross-linked micellar formulation of DOX (DOX-DCMs) for the targeted therapy of B-cell lymphoma. DOX-DCMs exhibited high drug loading capacity, optimal particle sizes (15-20 nm), outstanding stability in human plasma, and stimuli-responsive drug release profile under reductive conditions. DOX-DCMs significantly improved the pharmacokinetics of DOX, and its elimination half-life (t1/2) and area under curve (AUC) were 5...
April 23, 2018: Nanoscale
https://www.readbyqxmd.com/read/29682376/a-case-of-spontaneously-improving-secondary-hemophagocytic-lymphohistiocytosis-in-an-adult-associated-with-t-cell-histiocyte-rich-large-b-cell-lymphoma
#4
Cyrus Askin, Ashley Burris, Clifton Layman, Brian Haney, Jordan Hall
Secondary hemophagocytic lymphohistiocytosis (HLH) in adults is a rare, often fatal syndrome characterized by widespread immune dysregulation. It is seen as a complication of infections, autoimmune diseases, and malignancies. Among the malignancy-related causes, aggressive T-cell or NK-cell neoplasms are most notable, while B-cell lymphomas are less commonly implicated. We present the case of a 32-year-old male transferred to our facility with concern for HLH. During the first week of his hospitalization, his diagnosis was confirmed and the patient demonstrated spontaneous improvement in his symptoms prompting us to delay therapy while searching for a primary cause...
2018: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/29682368/transformation-of-t-cell-acute-lymphoblastic-lymphoma-to-peripheral-t-cell-lymphoma-a-report-of-two-cases
#5
Michael Markow, Abu-Sayeef Mirza, Lia Perez, Haipeng Shao, Pedro Horna, Claudio Anasetti, Lubomir Sokol, Mohammad O Hussaini
Nonhepatosplenic/noncutaneous γδ peripheral T-cell lymphoma (NHNC γδ PTCL) represents a miscellaneous group of unrelated T-cell lymphomas of which only isolated cases have been reported. We describe two cases of transformation from T-lymphoblastic leukemia/lymphoma to NHNC γδ PTCL. Transformation into more aggressive disease is a rare event in T-cell lineage-derived hematologic malignancies compared to B-cell neoplasms. Nevertheless, both of our cases involved relapse as PTCL manifested with skin involvement and an overt shift from blastic morphology to large granular leukemia-like mature T cells...
2018: Case Reports in Hematology
https://www.readbyqxmd.com/read/29682187/prognostic-value-of-early-18f-fdg-pet-scanning-evaluation-in-immunocompetent-primary-cns-lymphoma-patients
#6
Rudy Birsen, Estelle Blanc, Lise Willems, Barbara Burroni, Marielle Legoff, Emmanuelle Le Ray, Sylvain Pilorge, Sawsen Salah, Aude Quentin, Benedicte Deau, Patricia Franchi, Marguerite Vignon, Laurence Mabille, Charles Nguyen, Yioula Kirova, Pascale Varlet, Myriam Edjlali, Edouard Dezamis, Khê Hoang-Xuan, Carole Soussain, Caroline Houillier, Diane Damotte, Johan Pallud, Didier Bouscary, Jerome Tamburini
Primary central nervous system lymphoma (PCNSL) is a rare topographic variant of diffuse large B-cell lymphoma (DLBCL). While prognostic scales are useful in clinical trials, no dynamic prognostic marker is available in this disease. We report here the prognostic value of early metabolic response by 18F-FDG PET scanner (PET) in 25 newly diagnosed immunocompetent PCNSL patients. Induction treatment consisted of four cycles of Rituximab, Methotrexate and Temozolamide (RMT). Based on patient's general condition, consolidation by high-dose Etoposide and Aracytine was given to responding patients...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29682183/application-of-a-double-colour-upconversion-nanofluorescent-probe-for-targeted-imaging-of-mantle-cell-lymphoma
#7
Guang Yang, Yong Cao, Bin Yan, Qiang Lv, Jianbo Yu, Fusheng Zhao, Zhihong Chen, Heran Yang, Mengxi Chen, Zaishun Jin
Upconversion nanoparticles are a new type of fluorescent marker in biomedical imaging that can convert a longer wavelength (such as near-infrared fluorescence) into a shorter wavelength (such as visible light). Mantle cell lymphoma, which is derived from B-cell lymphoma, is a subtype of non-Hodgkin's lymphoma, and the immune phenotype is a mature B-cell phenotype (CD20+, CD5+). To develop the use of nanomaterials as specific markers for the medical imaging of mantle cell lymphoma, we modified the surface of UCNPs by oxidation so that the CD20 or CD5 antibody could covalently attach to the upconversion nanoparticles to form antibody-UCNP conjugates...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29680874/utility-and-proposed-algorithm-of-csf-flow-cytometry-in-hematologic-malignancies
#8
Bernard Tawfik, Larry Brown, Frankling Fuda, Weina Chen, Shuang Niu, Joseph Sailors, Navid Sadeghi
In patients with hematologic malignancies, multiparameter flow cytometry (FCM) offers greater sensitivity than cytology in detecting malignant cells in the initial cerebrospinal fluid (CSF) specimen. However, the role of FCM in assessment of subsequent specimens is unclear. We developed an algorithm to reduce the number of low-yield FCM tests without significant impact on clinically meaningful results. Patients with hematologic malignancies were studied in a derivation cohort, and the following algorithm was developed: (1) cytology and FCM on all initial samples, (2) cytology on all subsequent samples, and (3) FCM on subsequent samples only if previous FCM was positive...
April 21, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29680323/the-first-year-of-the-aevd-primary-cutaneous-lymphoma-registry
#9
Y Peñate, O Servitje, S Machan, R Fernández-de-Misa, M T Estrach, E Acebo, J Mitxelena, M D Ramón, A Flórez, M Blanes, M Morillo, S Medina, J Bassas, A Zayas, P Espinosa, A Pérez, N Gónzalez-Romero, J D Domínguez, C Muniesa, J López Robles, A Combalia, I Yanguas, H Suh, I Polo-Rodríguez, I Bielsa, A Mateu, B Ferrer, M A Descalzo, I García-Doval, P L Ortiz-Romero
BACKGROUND AND OBJECTIVE: Primary cutaneous lymphomas are uncommon. This article describes the Primary Cutaneous Lymphoma Registry of the Spanish Academy of Dermatology and Venereology (AEDV) and reports on the results from the first year. PATIENTS AND METHODS: Disease registry for patients with primary cutaneous lymphoma. The participating hospitals prospectively recorded data on diagnosis, treatment, tests, and disease stage for all patients with primary cutaneous lymphoma...
April 18, 2018: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/29679112/post-treatment-positron-emission-tomography-computed-tomography-is-highly-predictive-of-outcome-in-plasmablastic-lymphoma
#10
Yassine Al Tabaa, Emmanuelle Tchernonog, Pierre Faurie, Anne Ségolène Cottereau, Hélène Monjanel, Antoine Bonnet, Steven Le Gouill, Emmanuel Gyan, Hervé Ghesquieres, Denis Mariano-Goulart, Guillaume Cartron
PURPOSE: Plasmablastic lymphoma (PBL) is a rare variant of diffuse large B cell lymphomas (DLBCL) clinically characterized by a poorer prognostic. Few clinical and imaging data are available and derived from pooled case reports and small series. The aim of the study was to evaluate the FDG avidity at baseline and the utility of 18-Fluorodeoxyglucose (FDG) positron-emission-tomography/computed-tomography (PET/CT) for staging and response assessment. METHODS: Patients with newly diagnosed PBL seen at Lymphoma Study Association centers during the period 2005-2015 were included if they underwent a PET/CT at staging and at the end of treatment (eotPET) and had received an anthracycline-based first line therapy...
April 20, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29678835/the-ezh2-inhibitor-tazemetostat-is-well-tolerated-in-a-phase-i-trial
#11
(no author information available yet)
Tazemetostat has antitumor activity in B-cell non-Hodgkin lymphoma and advanced solid tumors.
April 20, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29678657/development-and-evaluation-of-an-optimal-human-single-chain-variable-fragment-derived-bcma-targeted-car-t-cell-vector
#12
Eric L Smith, Mette Staehr, Reed Masakayan, Ishan J Tatake, Terence J Purdon, Xiuyan Wang, Pei Wang, Hong Liu, Yiyang Xu, Sarah C Garrett-Thomson, Steven C Almo, Isabelle Riviere, Cheng Liu, Renier J Brentjens
B cell maturation antigen (BCMA) has recently been identified as an important multiple myeloma (MM)-specific target for chimeric antigen receptor (CAR) T cell therapy. In CAR T cell therapy targeting CD19 for lymphoma, host immune anti-murine CAR responses limited the efficacy of repeat dosing and possibly long-term persistence. This clinically relevant concern can be addressed by generating a CAR incorporating a human single-chain variable fragment (scFv). We screened a human B cell-derived scFv phage display library and identified a panel of BCMA-specific clones from which human CARs were engineered...
March 28, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29678441/acute-lymphoblastic-leukemia-lymphoma-of-the-oral-and-maxillofacial-region
#13
Celeste Sánchez-Romero, Hélder Antônio Rebelo Pontes, Flávia Sirotheau Corrêa Pontes, André Caroli Rocha, Román Carlos, Javier C Rendón, Oslei Paes de Almeida, Felipe Paiva Fonseca
OBJECTIVE: Our objective was to describe the clinicopathologic and immunohistochemical features of acute lymphoblastic leukemia/lymphoma (ALL/LBL) of the oral and maxillofacial region (OMF). STUDY DESIGN: Cases diagnosed as ALL/LBL of the OMF region were retrieved from the files of 2 Brazilian and 1 Guatemalan oral pathology services from 2005 to 2017. Microscopic and immunohistochemical features of each case were reviewed and fully described, and clinical data were retrieved from the pathology reports...
January 31, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29676946/unclassifiable-b-cell-lymphoma-with-symptomatic-hyperleukocytosis-managed-with-leukapheresis
#14
Lakshmi Manogna Chintalacheruvu, Jayadev Manikkam Umakanthan, Teddi Hernandez, Bryan Teruya, Apar Kishor Ganti
No abstract text is available yet for this article.
April 20, 2018: Journal of Oncology Practice
https://www.readbyqxmd.com/read/29676377/expect-the-unexpected-loss-of-surface-cd3-on-flow-cytometry-in-hepatosplenic-t-cell-lymphoma-an-eye-opener
#15
Richa Chauhan, Seema Tyagi, Sumeet Mirgh, Priyanka Mishra, Tulika Seth, Manoranjan Mahapatra, Haraprasad Pati, Renu Saxena
Hepatosplenic T-cell lymphoma (HSTCL) is a rare extranodal T-cell lymphoma that shows preferential sinusoidal infiltration of spleen and liver. It usually shows bright expression of surface CD3 (sCD3) with restriction for γδ-T cell receptors (TCR). We present a case of a 34-year-old male who presented with hepatosplenomegaly and B symptoms. His peripheral blood and bone marrow (BM) was involved by atypical lymphoid cells that were CD2+, CD7+, CD56+, cytoplasmic CD3+, and sCD3- on immunophenotyping by flow cytometry...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676376/an-unusual-presentation-of-large-b-cell-lymphoma-with-interferon-regulatory-factor-4-gene-rearrangement
#16
Anuj Verma, Sridhar Epari, Sumeet Gujral, Tanuja Shet
Rearrangements involving interferon regulatory factor 4 (IRF4) gene has been recently described in a subtype of diffuse large B-cell lymphoma (DLBCL). They occur in a typical clinical setting of a pediatric age group, predominantly with tonsillar mass, usually as a low-stage disease and with good response to chemotherapy. Histomorphologically, they show nodular/follicular architecture with diffuse strong immunopositivity for multiple myeloma oncogene 1. Here, the authors describe one such unusual case of large B-cell lymphoma with IRF4 gene rearrangement in a young child with the unusual location of inguinal region and detailed pathological (histological, immunohistochemical, and molecular) findings...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676363/lymphomatoid-granulomatosis-a-case-series-from-south-india
#17
Elanthenral Sigamani, Jagan Chandramohan, Sheila Nair, Geeta Chacko, Meera Thomas, Leni Grace Mathew, Susanne Pulimood, Marie Therese Manipadam
Context: Lymphomatoid granulomatosis (LYG) is a rare B-lymphoproliferative disorder characterised by an angiocentric and angiodestructive pattern along with Epstein - Barr virus (EBV) association. It is one of the diagnostic challenges in lymphoma pathology. Deregulation of EBV immune surveillance is one of the narrated hypotheses in the literature. Extrapulmonary manifestations are rare with LYG. Morphological grading is done based on the number of EBV-positive B cells, which is useful to strategize treatment protocol...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676358/frequency-distribution-and-immunomorphologic-characteristics-of-peripheral-t-cell-lymphoma-not-otherwise-specified-in-a-tertiary-care-center-in-southern-india
#18
Archana Lakshmanan, Deeksha Sikri, Sushama Patil, Ann Kurian, S Annapurneswari, Sheila Nair
Aims: In world literature, Peripheral T-cell lymphomas (PTCLs) constituted about 12% of non-Hodgkin's lymphomas (NHL) of which PTCL not otherwise specified (NOS) was the most common subtype. This study was undertaken to ascertain the frequency and to assess the morphologic and immunophenotypic characteristics of PTCL, NOS over a period of 5 years in a tertiary care referral center in Southern India. Materials and Methods: Slides and blocks of all PTCL, NOS were retrieved, and a detailed morphologic and immunophenotypic study using a wide panel of antibodies was done...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676233/chimeric-antigen-receptor-t-cell-based-immunotherapy-for-cancer
#19
Feng Li, Tengfei Zhang, Ling Cao, Yi Zhang
Cancer immunotherapy, a new weapon against cancers by harnessing the patient's own immune system, potentiates an extended remission and possibly a cure for cancer. T cells genetically engineered with chimeric antigen receptor (CAR) vectors can specifically target the surface antigen of cancer cells and kill them in an MHC-independent manner. CD19 is extensively expressed on cancerous cells in B cell malignancies. To target this antigen, CAR T cells have gained great success in treating patients with B cell leukemia and lymphoma...
April 19, 2018: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29675104/prognostic-value-of-bone-marrow-fdg-uptake-pattern-of-pet-ct-in-newly-diagnosed-diffuse-large-b-cell-lymphoma
#20
Yumei Chen, Mingge Zhou, Jianjun Liu, Gang Huang
Purpose: The value of 18 F-fluorodeoxyglucose positron emission tomography /computed tomography (18 F-FDG PET/CT) in assessing bone marrow involvement (BMI) of lymphoma remains controversial. The present study aims to evaluate the prognostic meaning of bone marrow FDG uptake pattern in PET/CT of newly diagnosed diffuse large B-cell lymphoma (DLBCL) patients. Materials and Methods: 193 newly diagnosed DLBCL patients were retrospectively analyzed. All patients received 6-8 cycles of rituximab plus cyclophosphamide, doxorubicin, vincristine and prednisone (R-CHOP)...
2018: Journal of Cancer
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