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https://www.readbyqxmd.com/read/29730836/round-robin-test-for-the-cell-of-origin-classification-of-diffuse-large-b-cell-lymphoma-a-feasibility-study-using-full-slide-staining
#1
Sarah Reinke, Julia Richter, Falko Fend, Alfred Feller, Martin-Leo Hansmann, Katrin Hüttl, Ilske Oschlies, German Ott, Peter Möller, Andreas Rosenwald, Harald Stein, Michael Altenbuchinger, Rainer Spang, Wolfram Klapper
Diffuse large B-cell lymphoma (DLBCL) is subdivided by gene expression analysis (GEP) into two molecular subtypes named germinal center B-cell-like (GCB) and activated B-cell-like (ABC) after their putative cell-of-origin (COO). Determination of the COO is considered mandatory in any new-diagnosed DLBCL, not otherwise specified according to the updated WHO classification. Despite the fact that pathologists are free to choose the method for COO classification, immunohistochemical (IHC) assays are most widely used...
May 5, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29656787/fifty-year-incidence-of-waldenstr%C3%A3-m-macroglobulinemia-in-olmsted-county-minnesota-from-1961-through-2010-a-population-based-study-with-complete-case-capture-and-hematopathologic-review
#2
Robert A Kyle, Dirk R Larson, Ellen D McPhail, Terry M Therneau, Angela Dispenzieri, Shaji Kumar, Prashant Kapoor, James R Cerhan, S Vincent Rajkumar
OBJECTIVE: To determine the incidence of Waldenström macroglobulinemia (WM) in a strictly defined geographic area over a 50-year period. PATIENTS AND METHODS: All residents of Olmsted County with a diagnosis of WM, consisting of a monoclonal IgM protein of any size and/or 10% or more lymphoplasmacytic infiltration of the bone marrow along with anemia, constitutional symptoms, hyperviscosity, lymphadenopathy, or hepatosplenomegaly requiring therapy, were identified from January 1, 1961, to December 31, 2010...
April 12, 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29551807/uscap-2018-abstracts-hematopathology-1387-1604
#3
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29551790/uscap-2018-abstracts-hematopathology-1387-1604
#4
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29453601/immunohistochemical-biomarkers-in-pituitary-pathology
#5
REVIEW
Sylvia L Asa, Ozgur Mete
Pituitary pathology is one area of endocrine pathology that is highly dependent on immunohistochemistry. There is a wide range of disorders that occur in and around the sella turcica, and the distinction of tumor-like lesions from neoplasms requires careful evaluation. The diagnosis, prognosis, and predictive features of neoplasms in the sellar region are all dependent on the application and interpretation of biomarkers of cell differentiation, hormonal activity, subcellular morphology, and proliferation. As in hematopathology, the number of biomarkers has increased dramatically and continues to increase...
February 16, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29330221/minimal-measurable-residual-disease-in-aml-a-consensus-document-from-the-european-leukemianet-mrd-working-party
#6
REVIEW
Gerrit J Schuurhuis, Michael Heuser, Sylvie Freeman, Marie-Christine Béné, Francesco Buccisano, Jacqueline Cloos, David Grimwade, Torsten Haferlach, Robert K Hills, Christopher S Hourigan, Jeffrey L Jorgensen, Wolfgang Kern, Francis Lacombe, Luca Maurillo, Claude Preudhomme, Bert A van der Reijden, Christian Thiede, Adriano Venditti, Paresh Vyas, Brent L Wood, Roland B Walter, Konstanze Döhner, Gail J Roboz, Gert J Ossenkoppele
Measurable residual disease (MRD; previously termed minimal residual disease) is an independent, postdiagnosis, prognostic indicator in acute myeloid leukemia (AML) that is important for risk stratification and treatment planning, in conjunction with other well-established clinical, cytogenetic, and molecular data assessed at diagnosis. MRD can be evaluated using a variety of multiparameter flow cytometry and molecular protocols, but, to date, these approaches have not been qualitatively or quantitatively standardized, making their use in clinical practice challenging...
March 22, 2018: Blood
https://www.readbyqxmd.com/read/29140404/evaluation-of-opportunities-to-improve-hematopathology-diagnosis-for-vietnam-pathologists
#7
Vanessa Dayton, Chi Kim Nguyen, Trinh Thu Van, Nguyen Van Thanh, Ta Van To, Nguyen Phi Hung, Nguyen Ngoc Dung, Danny A Milner
Objectives: We evaluate the need for, feasibility of, and impediments to improving hematopathology diagnoses for cancer hospitals in Vietnam. Methods: Two hematopathologists from the United States visited three major cancer treatment hospitals in Vietnam to workshop a sampling of difficult hematopathology cases. With Vietnamese pathologists, they toured histopathology, immunohistochemistry, and ancillary laboratory facilities. Results: Automated tissue processors and slide staining equipment were documented for each of the three hospitals...
November 20, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28956058/-report-on-the-meeting-of-the-working-group-for-hematopathology-annual-conference-of-the-german-society-for-pathology-erlangen-2017
#8
G Ott, F Fend
No abstract text is available yet for this article.
September 27, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28937778/-changes-of-the-who-classification-of-myeloid-neoplasms-in-the-context-of-the-2016-revision
#9
Juraj Marcinek, Tomáš Balhárek, Lukáš Plank
Continual progress of knowleges in hematopathology and genetics of hematologic tumors requires actualisation of widely accepted and presently used WHO classification of myeloid neoplasms published 8 years ago. However, the basic principles of this classification remain unchanged, therefore the authors of new WHO classification mention the "revision" of previous and not the introduction o new classification. The aim of this paper is to outline the most important changes of myeloid neoplasm diagnostics to pathologists, hematologists and other clinicians in Czech Republic and Slovakia...
2017: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/28914619/there-are-no-magic-bullets-in-hematopathology-even-immunostains-for-cd20-and-cd3-can-get-you-into-trouble
#10
Judith A Ferry
Immunohistochemistry is a powerful tool for the diagnosis and subclassification of hematolymphoid neoplasms. However, the expression of certain markers is not always as expected, and unusual patterns of staining can lead to misdiagnosis. CD20 and CD3 are our most commonly used markers for identification of B cells and T cells, respectively, and they almost always yield reliable, specific staining. This discussion focuses on diagnostic pitfalls related to the use of immunohistochemistry for CD20 and CD3 in hematopathology, and specifically on diagnostic challenges that arise when (1) CD20 is not expressed in B-cell lymphomas, when (2) CD20 is expressed in plasma cell neoplasms and T-cell lymphomas, and when (3) CD3 is expressed in B-cell lymphomas and Hodgkin lymphoma...
January 2018: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28844114/the-clinicopathologic-spectrum-of-mature-aggressive-b-cell-lymphomas
#11
REVIEW
Lisa Rimsza, Stefania Pittaluga, Stephan Dirnhofer, Christiane Copie-Bergman, Laurence de Leval, Fabio Facchetti, Stefano Pileri, Andreas Rosenwald, Andrew Wotherspoon, Falko Fend
Our understanding of mature aggressive B cell lymphomas has evolved significantly in the last years as reflected in the 2016 update of the WHO lymphoma classification. A main topic of the 2016 European Association for Haematopathology/Society of Hematopathology lymphoma workshop in Basel therefore was the clinicopathological spectrum of mature aggressive B cell lymphomas with the exception of conventional diffuse large B cell lymphoma. In this review, we summarize two sessions dedicated to "high-grade B cell lymphomas, with MYC and BCL2 and/or BCL6 rearrangements (so-called double/triple-hit lymphomas)" and "high-grade B cell lymphomas, NOS" as defined in the 2016 update of the WHO lymphoma classification, Burkitt lymphoma and related neoplasms, and terminally differentiated aggressive B cell lymphomas...
October 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28828200/pathedex-uncovering-high-explanatory-visual-diagnostics-heuristics-using-digital-pathology-and-multiscale-gaze-data
#12
Dmitriy Shin, Mikhail Kovalenko, Ilker Ersoy, Yu Li, Donald Doll, Chi-Ren Shyu, Richard Hammer
BACKGROUND: Visual heuristics of pathology diagnosis is a largely unexplored area where reported studies only provided a qualitative insight into the subject. Uncovering and quantifying pathology visual and nonvisual diagnostic patterns have great potential to improve clinical outcomes and avoid diagnostic pitfalls. METHODS: Here, we present PathEdEx, an informatics computational framework that incorporates whole-slide digital pathology imaging with multiscale gaze-tracking technology to create web-based interactive pathology educational atlases and to datamine visual and nonvisual diagnostic heuristics...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28695297/histiocytic-and-dendritic-cell-neoplasms-what-have-we-learnt-by-studying-67-cases
#13
Fabio Facchetti, Stefano Aldo Pileri, Luisa Lorenzi, Valentina Tabanelli, Lisa Rimsza, Stefania Pittaluga, Stephan Dirnhofer, Christiane Copie-Bergman, Laurence de Leval, Andreas Rosenwald, Andrew Wotherspoon, Falko Fend
Tumors derived from histiocytic and dendritic cells encompass a large and heterogeneous group of neoplastic and reactive conditions, and their diagnosis is challenging both for pathologists and clinicians. Diagnosis is based on morphological and phenotypical findings, but hybrid features are not uncommon. Furthermore, recent studies uncovered the molecular mechanisms driving some of these tumors, improving diagnostic adequacy, and providing the basis for effective therapeutic breakthroughs.Sixty-seven cases were submitted to the accessory cell and histiocytic neoplasms session at the European Association of Haematopathology/Society for Hematopathology workshop 2016 held in Basel, Switzerland...
October 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28685840/european-leukemianet-study-on-the-reproducibility-of-bone-marrow-features-in-masked-polycythemia-vera-and-differentiation-from-essential-thrombocythemia
#14
Hans Michael Kvasnicka, Attilio Orazi, Juergen Thiele, Giovanni Barosi, Carlos E Bueso-Ramos, Alessandro M Vannucchi, Robert P Hasserjian, Jean-Jacques Kiladjian, Umberto Gianelli, Richard Silver, Tariq I Mughal, Tiziano Barbui
The purpose of the study was to assess consensus and interobserver agreement among an international panel of six hematopathologists regarding characterization and reproducibility of bone marrow (BM) histologic features used to diagnose early stage myeloproliferative neoplasms, in particular differentiation of so-called masked/prodromal polycythemia vera (mPV) from JAK2-mutated essential thrombocythemia (ET). The six members of the hematopathology panel evaluated 98 BM specimens independently and in a blinded fashion without knowledge of clinical data...
October 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28592786/epstein-barr-virus-associated-lymphoproliferative-disorders-review-and-update-on-2016-who-classification
#15
REVIEW
Hyun-Jung Kim, Young Hyeh Ko, Ji Eun Kim, Seung-Sook Lee, Hyekyung Lee, Gyeongsin Park, Jin Ho Paik, Hee Jeong Cha, Yoo-Duk Choi, Jae Ho Han, Jooryung Huh
Epstein-Barr virus (human herpesvirus-4) is very common virus that can be detected in more than 95% of the human population. Most people are asymptomatic and live their entire lives in a chronically infected state (IgG positive). However, in some populations, the Epstein-Barr virus (EBV) has been involved in the occurrence of a wide range of B-cell lymphoproliferative disorders (LPDs), including Burkitt lymphoma, classic Hodgkin's lymphoma, and immune-deficiency associated LPDs (post-transplant and human immunodeficiency virus-associated LPDs)...
July 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28549617/hematopathological-alterations-of-major-tumor-suppressor-cascade-vital-cell-cycle-inhibitors-and-hematopoietic-niche-components-in-experimental-myelodysplasia
#16
Ritam Chatterjee, Shubhangi Gupta, Sujata Law
Myelodysplastic syndrome (MDS) is a poorly understood dreadful hematopoietic disorder that involves maturational defect and abnormalities in blood cell production leading to dysplastic changes and peripheral blood pancytopenia. The present work aims in establishing the mechanistic relationship of the expressional alterations of major tumor suppressor cascade, vital cell cycle inhibitors and hematopoietic microenvironmental components with the disease pathophysiologies. The study involves the development of N-N' Ethylnitrosourea (ENU) induced mouse model of MDS, characterization of the disease with blood film and bone marrow smear studies, scanning electron microscopic observation, mitochondrial membrane potential determination, flowcytometric analysis of osteoblastic and vascular niche components along with the expressional study of cleaved caspase-3, PCNA, Chk-2, p53, Ndn, Gfi-1, Tie-2, Sdf-1, Gsk-3β, p18 and Myt-1 in the bone marrow compartment...
August 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28535584/molecular-testing-of-lymphoproliferative-disorders-current-status-and-perspectives
#17
REVIEW
Yoon Kyung Jeon, Sun Och Yoon, Jin Ho Paik, Young A Kim, Bong Kyung Shin, Hyun-Jung Kim, Hee Jeong Cha, Ji Eun Kim, Jooryung Huh, Young-Hyeh Ko
Molecular pathologic testing plays an important role for the diagnosis, prognostication and decision of treatment strategy in lymphoproliferative disease. Here, we briefly review the molecular tests currently used for lymphoproliferative disease and those which will be implicated in clinical practice in the near future. Specifically, this guideline addresses the clonality test for B- and T-cell proliferative lesions, molecular cytogenetic tests for malignant lymphoma, determination of cell-of-origin in diffuse large B-cell lymphoma, and molecular genetic alterations incorporated in the 2016 revision of the World Health Organization classification of lymphoid neoplasms...
May 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28418282/immunohistochemical-detection-of-hairy-cell-leukemia-in-paraffin-sections-the-role-of-pax5-and-cd103-double-staining-to-improve-specificity-and-sensitivity
#18
Igor B Rozenvald, Maurice D Richardson, Lenessa Brock, Russell L Maiese
CONTEXT: - In hematopathology practice, abnormal expression of CD103 on B cells is detected by flow cytometry in hairy cell leukemia (HCL) and, in combination with other phenotypic and morphologic findings, provides diagnostic specificity and sensitivity. Immunostaining on paraffin sections makes it possible to perform immunophenotyping in situ. However, normal bone marrow contains CD103-positive cells, which are not B cells, making it difficult to be certain about low-level involvement by HCL...
June 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28395108/b-cell-and-classical-hodgkin-lymphomas-associated-with-immunodeficiency-2015-sh-eahp-workshop-report-part-2
#19
Daphne de Jong, Margaretha G M Roemer, John K C Chan, John Goodlad, Dita Gratzinger, Amy Chadburn, Elaine S Jaffe, Jonathan Said, Yasodha Natkunam
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology submitted small and large B-cell lymphomas (BCLs), including classical Hodgkin lymphoma (CHL), in the context of immunodeficiency. Methods: Clinicopathologic and molecular features were studied to explore unifying concepts in malignant B-cell proliferations across immunodeficiency settings. Results: Cases submitted to the workshop spanned small BCLs presenting as nodal or extranodal marginal zone lymphoma and lymphoplasmacytic lymphoma, Epstein-Barr virus (EBV) positive in 75% of cases...
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28395107/ebv-positive-b-cell-proliferations-of-varied-malignant-potential-2015-sh-eahp-workshop-report-part-1
#20
Yasodha Natkunam, John R Goodlad, Amy Chadburn, Daphne de Jong, Dita Gratzinger, John K C Chan, Jonathan Said, Elaine S Jaffe
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology aimed to review B-cell proliferations of varied malignant potential associated with immunodeficiency. Methods: The Workshop Panel reviewed all cases of B-cell hyperplasias, polymorphic B-lymphoproliferative disorders, Epstein-Barr virus (EBV)-positive mucocutaneous ulcer, and large B-cell proliferations associated with chronic inflammation and rendered consensus diagnoses...
February 1, 2017: American Journal of Clinical Pathology
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