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Haematopathology

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https://www.readbyqxmd.com/read/28632297/n%C3%A3-lbiopsi-%C3%A3-r-inte-b%C3%A3-sta-metod-f%C3%A3-r-att-diagnostisera-lymfom-den-%C3%A3-kade-anv%C3%A3-ndningen-kan-ge-allvarliga-konsekvenser-f%C3%A3-r-diagnostik-forskning-och-behandlingsutveckling
#1
Rose-Marie Amini, Christer Sundström
Core needle biopsies for lymphoma diagnosis seriously affect diagnostics, treatment development and research Core needle biopsies (CNBs) are widely used in clinical diagnostic labs to aid in the diagnosis of malignant lymphomas and in latter years their use is increasing. CNBs provide a rapid method for obtaining tumour material and may be beneficial when the affected lymph nodes are located deep in the abdominal cavity or mediastinum and surgical excisional biopsies may be difficult to perform. However, according to the Swedish Haematopathology Quality and Standardization Committee, CNBs are insufficient for lymphoma diagnostic purposes and the guidelines state that material from surgical excisional biopsies are mandatory in order to obtain a robust histopathological evaluation of the lymph node architecture, cellular composition and growth pattern...
June 16, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28573510/b-cell-lymphomas-with-discordance-between-pathological-features-and-clinical-behavior
#2
Laurence de Leval, Christiane Copie-Bergman, Andreas Rosenwald, Lisa Rimsza, Stefania Pittaluga, Bettina Bisig, Stefan Dirnhofer, Fabio Facchetti, Stefano Pileri, Falko Fend, Andrew Wotherspoon
B-cell lymphomas encompass a large number of disease entities clinically ranging from indolent to aggressive. The defining pathological features usually predict clinical course, with small and large B-cell lymphomas correlating to low-grade vs high-grade features, but discordant situations may be encountered. Two sessions of the workshop of the XVIII meeting of the European Association for Haematopathology (EAHP) held in Basel in 2016 addressed this topic. One session illustrated various facets of "aggressiveness" in indolent lymphomas, either peculiar clinical manifestations, cytological variants, or unusual genetic features, as well as several examples of progression or transformation to a more aggressive disease...
June 1, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28395108/b-cell-and-classical-hodgkin-lymphomas-associated-with-immunodeficiency-2015-sh-eahp-workshop-report-part-2
#3
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
#4
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
https://www.readbyqxmd.com/read/28395106/primary-congenital-immunodeficiency-2015-sh-eahp-workshop-report-part-5
#5
Dita Gratzinger, Elaine S Jaffe, Amy Chadburn, John K C Chan, Daphne de Jong, John R Goodlad, Jonathan Said, Yasodha Natkunam
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology aimed to review primary immunodeficiency and related lymphoproliferations. Methods: Primary immunodeficiencies were divided into immune dysregulation, DNA repair defects, low immunoglobulins, and combined immunodeficiencies. Results: Autoimmune lymphoproliferative syndrome (ALPS) is a prototypical immune dysregulation-type immunodeficiency, with defects in T-cell signaling or apoptosis, expansion of T-cell subsets, and predisposition to hemophagocytic lymphohistiocytosis...
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28395105/t-and-nk-cell-lymphomas-and-systemic-lymphoproliferative-disorders-and-the-immunodeficiency-setting-2015-sh-eahp-workshop-report-part-4
#6
Dita Gratzinger, Daphne de Jong, Elaine S Jaffe, Amy Chadburn, John K C Chan, John R Goodlad, Jonathan Said, Yasodha Natkunam
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology aimed to review immunodeficiency-related T- and natural killer (NK)-cell lymphoproliferations. Methods: The Workshop Panel reviewed 88 T- or NK-cell lymphoproliferations and rendered consensus diagnoses. Results: Hyperplasias of T-cell subsets may be clonal; retained architecture and the clinical setting support a benign diagnosis. Specific associations include hepatosplenic T-cell lymphoma with iatrogenic immunosuppression and breast implants with an indolent variant of anaplastic large cell lymphoma...
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28395104/hhv8-kshv-positive-lymphoproliferative-disorders-and-the-spectrum-of-plasmablastic-and-plasma-cell-neoplasms-2015-sh-eahp-workshop-report-part-3
#7
Amy Chadburn, Jonathan Said, Dita Gratzinger, John K C Chan, Daphne de Jong, Elaine S Jaffe, Yasodha Natkunam, John R Goodlad
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology aimed to review immunodeficiency-related lymphoproliferative disorders with plasmablastic and plasma cell differentiation. Methods: The workshop panel reviewed human herpes virus 8 (HHV8)/Kaposi sarcoma herpesvirus (KSHV)-associated lesions and other lesions exhibiting plasma cell differentiation, including plasmablastic proliferations with features of myeloma/plasmacytoma, plasmablastic neoplasms presenting in extranodal sites and effusion-based lymphomas, and rendered a consensus diagnosis...
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28395103/immunodeficiency-and-dysregulation-report-of-the-2015-workshop-of-the-society-for-hematopathology-european-association-for-haematopathology
#8
Yasodha Natkunam, Dita Gratzinger, Daphne de Jong, Amy Chadburn, John R Goodlad, John K C Chan, Jonathan Said, Elaine S Jaffe
No abstract text is available yet for this article.
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28191591/plasmacytoid-dendritic-cell-proliferations-and-neoplasms-involving-the-bone-marrow-summary-of-the-workshop-cases-submitted-to-the-18th-meeting-of-the-european-association-for-haematopathology-eahp-organized-by-the-european-bone-marrow-working-group-basel-2016
#9
Alexandar Tzankov, Konnie Hebeda, Markus Kremer, Roos Leguit, Attilio Orazi, Jon van der Walt, Umberto Gianelli
Two distinct forms of neoplasms derived from plasmacytoid dendritic cells (PDC) exist: mature PDC proliferations associated with myeloid neoplasms and blastic PDC neoplasms (BPDCN). Ten cases of PDC proliferations and neoplasms in the bone marrow have been submitted to the bone marrow workshop held at the 18th EAHP meeting. Based on observations from the submitted cases, scattered PDC (≤1% of cells) and PDC aggregates (≤10 PDC/HPF) reflect the normal bone marrow composition, while in myelodysplastic syndromes (MDS), there is a propensity for larger/more PDC aggregates (1-5% and 35 PDC/HPF)...
May 2017: Annals of Hematology
https://www.readbyqxmd.com/read/27766121/transformation-of-cll-to-alcl-the-role-of-clonality-studies-in-diagnostic-molecular-haematopathology
#10
Richard Colling, Daniel Royston, Elizabeth Soilleux
Clonality studies greatly assist in the diagnosis of challenging haematopathology cases. These robust and standardised tests aid the detection of clonal lymphoid populations and may assist in lymphocyte subtyping. In this case report, a gentleman presented with a high-grade transformation of a B cell neoplasm which histologically and immunophenotypically mimicked a T cell anaplastic large-cell lymphoma. With the aid of T cell and B cell receptor clonality studies, it was demonstrated that this tumour was in fact of B cell lineage...
September 2016: Journal of Hematopathology
https://www.readbyqxmd.com/read/27582569/clinical-impact-of-recurrently-mutated-genes-on-lymphoma-diagnostics-state-of-the-art-and-beyond
#11
REVIEW
Richard Rosenquist, Andreas Rosenwald, Ming-Qing Du, Gianluca Gaidano, Patricia Groenen, Andrew Wotherspoon, Paolo Ghia, Philippe Gaulard, Elias Campo, Kostas Stamatopoulos
Similar to the inherent clinical heterogeneity of most, if not all, lymphoma entities, the genetic landscape of these tumors is markedly complex in the majority of cases, with a rapidly growing list of recurrently mutated genes discovered in recent years by next-generation sequencing technology. Whilst a few genes have been implied to have diagnostic, prognostic and even predictive impact, most gene mutations still require rigorous validation in larger, preferably prospective patient series, to scrutinize their potential role in lymphoma diagnostics and patient management...
September 2016: Haematologica
https://www.readbyqxmd.com/read/27208429/issues-in-diagnosis-of-small-b-cell-lymphoid-neoplasms-involving-the-bone-marrow-and-peripheral-blood-report-on-the-bone-marrow-workshop-of-the-xviith-meeting-of-the-european-association-for-haematopathology-and-the-society-for-hematopathology
#12
Anna Porwit, Falko Fend, Marcus Kremer, Attilio Orazi, Mükerrem Safali, Jon van der Walt
Small B cell lymphoid neoplasms are the most common lymphoproliferative disorders involving peripheral blood (PB) and bone marrow (BM). The Bone Marrow Workshop (BMW) organized by the European Bone Marrow Working Group (EBMWG) of the European Association for Haematopathology (EAHP) during the XVIIth EAHP Meeting in Istanbul, October 2014, was dedicated to discussion of cases illustrating how the recent advances in immunophenotyping, molecular techniques and cytogenetics provide better understanding and classification of these entities...
September 2016: Histopathology
https://www.readbyqxmd.com/read/27042473/natural-killer-cell-lymphoma-a-case-with-classification-dilemma
#13
Ankit Kumar Jitani, Yookarin Khonglah, Ritesh Kumar, Bidyut Bikash Gogoi, Ekta Jajodia
Non-Hodgkins lymphoma of the Natural Killer (NK) cell type is rare. World Health Organisation recognises 3 NK-cell phenotypic entities; extranodal NK/T cell lymphoma, nasal type (ENK/TL); aggressive NK cell leukaemia (ANKL); and chronic lymphoproliferative disorders of NK cells (CLPD-NK) which is classified as a provisional entity. Though specific clinical, morphological and immunophenotypic criteria have been laid down to diagnose these conditions there may however, be considerable variations in the clinical presentation making diagnosis difficult...
February 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/26984929/tgf%C3%AE-expression-in-myeloid-malignancies
#14
Simon Kavanagh, Bob Mirzai, Kathy Fuller, Wendy N Erber
BACKGROUND: Transforming growth factor α (TGFα) is a peptide growth factor known to be expressed in normal haemopoiesis. It is also expressed in a range of epithelial neoplasms but has not been assessed in haemopoietic malignancies. We have performed an immunohistochemical evaluation of TGFα in acute and chronic myeloid malignancies. METHODS: TGFα expression was semiquantitatively assessed in 69 normal bone marrow trephines and 157 cases of myeloid malignancy using an immunohistochemical approach...
June 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/26494068/order-of-curricular-interventions-in-recognition-of-haematopathological-images
#15
RANDOMIZED CONTROLLED TRIAL
Shuchi Gulati, Thomas Wasser, Anthony A Donato
No abstract text is available yet for this article.
November 2015: Medical Education
https://www.readbyqxmd.com/read/26481245/the-heterogeneity-of-follicular-lymphomas-from-early-development-to-transformation
#16
REVIEW
Luc Xerri, Stephan Dirnhofer, Leticia Quintanilla-Martinez, Birgitta Sander, John K C Chan, Elias Campo, Steven H Swerdlow, German Ott
Follicular lymphoma (FL) is a lymphoma composed of germinal center B cells, i.e., centroblasts and centrocytes, that almost always show at least a focal follicular growth pattern. Most cases have a characteristic CD5-, CD10+, BCL6+, and BCL2+ immunophenotype, and 85 % of cases exhibit the hallmark translocation t(14;18)(q32;q21) involving BCL2 and IGH. Although the typical clinicopathological findings of FL are well recognized, cases with unusual clinical, morphologic, immunophenotypic, and genetic features may pose problems in diagnosis and nomenclature...
February 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/26454445/the-many-faces-of-small-b-cell-lymphomas-with-plasmacytic-differentiation-and-the-contribution-of-myd88-testing
#17
REVIEW
Steven H Swerdlow, Isinsu Kuzu, Ahmet Dogan, Stephan Dirnhofer, John K C Chan, Birgitta Sander, German Ott, Luc Xerri, Leticia Quintanilla-Martinez, Elias Campo
Plasmacytic differentiation may occur in almost all small B cell lymphomas (SBLs), although it varies from being uniformly present (as in lymphoplasmacytic lymphoma (LPL)) to very uncommon (as in mantle cell lymphomas (MCLs)). The discovery of MYD88 L265P mutations in the vast majority of LPLs has had a major impact on the study of these lymphomas. Review of the cases contributed to the 2014 European Association for Haematopathology/Society for Hematopathology slide workshop illustrated how mutational testing has helped refine the diagnostic criteria for LPL, emphasizing the importance of identifying a clonal monotonous lymphoplasmacytic population and highlighting how LPL can still be diagnosed with extensive nodal architectural effacement, very subtle plasmacytic differentiation, follicular colonization, or uncommon phenotypes such as CD5 or CD10 expression...
March 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/26416032/indolent-lymphomas-in-the-pediatric-population-follicular-lymphoma-irf4-mum1-lymphoma-nodal-marginal-zone-lymphoma-and-chronic-lymphocytic-leukemia
#18
REVIEW
Leticia Quintanilla-Martinez, Birgitta Sander, John K C Chan, Luc Xerri, German Ott, Elias Campo, Steven H Swerdlow
Indolent lymphomas in the pediatric population were discussed during the 2014 European Association for Haematopathology/Society of Hematopathology workshop in Istanbul, Turkey. This session was focused on pediatric-type follicular lymphoma (FL), and its differential diagnosis with the newly recognized entity of IRF4/MUM1+ lymphomas mainly involving Waldeyer's ring. The differential diagnosis between t(14;18) negative FL grade 1/2 and pediatric-type FL in adults was highlighted. The overlapping pathological and clinical features between FL and nodal marginal zone lymphoma (NMZL) in children and young adults were recognized and morphologic and immunophenotypical criteria helpful for the differential diagnosis were presented...
February 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/26298543/mantle-cell-lymphoma-a-spectrum-from-indolent-to-aggressive-disease
#19
REVIEW
Birgitta Sander, Leticia Quintanilla-Martinez, German Ott, Luc Xerri, Isinsu Kuzu, John K C Chan, Steven H Swerdlow, Elias Campo
Mantle cell lymphoma (MCL) is a distinctive lymphoma type generally characterized by the presence of CCND1 translocation and overexpression of cyclin D1. MCL usually presents with advanced stage and rapid clinical progression. The diagnosis is in most instances uncomplicated but cases with variant morphologies or immunophenotypes, especially cyclin D1-negative cases, may cause diagnostic difficulties. During the mantle cell lymphoma (MCL) session at the European Association of Haematopathology/Society for Hematopathology workshop 2014 held in Istanbul, Turkey, submitted cases illustrated interesting features such as unusual morphology or immunophenotypes...
March 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/26276771/t-lymphoblastic-leukemia-lymphoma
#20
REVIEW
M James You, L Jeffrey Medeiros, Eric D Hsi
OBJECTIVES: To review important concepts from the 2013 Society for Hematopathology/European Association for Haematopathology Workshop session on T-acute lymphoblastic leukemia/T-lymphoblastic lymphoma (T-ALL/T-LBL). METHODS: Twenty-one submitted cases are reviewed and summarized, with emphasis on key diagnostic or biologic points, and supplemented with relevant literature citations. RESULTS: Early T-cell precursor (ETP)-ALL represented about one-third of all cases submitted...
September 2015: American Journal of Clinical Pathology
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