23 documents found, page 1 of 3

Plasma cell leukemia with t(11;14)(q13;q32) simulating lymphoplasmacytic lympho...

Diagnosis and treatment of chronic lymphocytic leukemia: recommendations from t...

ABSTRACT Chronic lymphocytic leukemia is characterized by clonal proliferation and progressive accumulation of B-cell lymphocytes that typically express CD19+, CD5+ and CD23+. The lymphocytes usually infiltrate the bone marrow, peripheral blood, lymph nodes, and spleen. The diagnosis is established by immunophenotyping circulating B-lymphocytes, and prognosis is defined by two staging systems (Rai and Binet) es...

Proposal for the standardization of flow cytometry protocols to detect minimal r...

ABSTRACT Minimal residual disease is the most powerful predictor of outcome in acute leukemia and is useful in therapeutic stratification for acute lymphoblastic leukemia protocols. Nowadays, the most reliable methods for studying minimal residual disease in acute lymphoblastic leukemia are multiparametric flow cytometry and polymerase chain reaction. Both provide similar results at a minimal residual disease lev...

Recommendations for quality assurance in multiparametric flow cytometry: first ...

ABSTRACT The Brazilian Group of Flow Cytometry (Grupo Brasileiro de Citometria de Fluxo [GBCFLUX]), founded on April 24, 2010, is composed of experts in flow cytometry (FC) area who have the common objective of contributing to technical and scientific advances in Brazilian clinical and research laboratories. Among GBCFLUX working groups, the Quality Control (QC) subcommittee is responsible for discussing data i...

Multiple myeloma with cells typically seen in storage diseases

We report on a rare case of multiple myeloma with atypically large cells containing a great amount of azurophilic inclusions usually seen in storage diseases.

Caracterização imunofenotípica das células plasmáticas em pacientes portadores ...

INTRODUÇÃO E OBJETIVO: O mieloma múltiplo (MM) é uma doença maligna incurável caracterizada pela proliferação de um único clone de plasmócitos na medula óssea. O objetivo deste estudo foi avaliar a frequência e o valor prognóstico da expressão dos fenótipos aberrantes em pacientes com MM por meio de citometria de fluxo multiparamétrica. MÉTODOS: O estudo foi realizado no Hospital São Paulo/Disciplina de Hematol...

Hemoglobinúria paroxística noturna: da fisiopatologia ao tratamento

Hemoglobinúria paroxística noturna (HPN) é uma anemia hemolítica crônica adquirida rara, de curso clínico extremamente variável. Apresenta-se frequentemente com infecções recorrentes, neutropenia e trombocitopenia, e surge em associação com outras doenças hematológicas, especialmente com síndromes de falência medular, como anemia aplásica e síndrome mielodisplásica. É considerada ainda um tipo de trombofilia ad...

Human neutrophil alloantigens systems

Neutrophil alloantigens are involved in a variety of clinical conditions including immune neutropenias, transfusion-related acute lung injury (TRALI), refractoriness to granulocyte transfusions and febrile transfusion reactions. In the last decade, considerable progress has been made in the characterization of the implicated antigens. Currently, seven antigens are assigned to five human neutrophil antigen (HNA)...

Prevalence of FMS-like tyrosine kinase 3/internal tandem duplication (FLT3/ITD+...

CONTEXT AND OBJECTIVE: The mechanism involved in leukemogenesis remains unclear and more information about the disruption of the cell proliferation, cell differentiation and apoptosis of neoplastic cells is required. DESIGN AND SETTING: Cross-sectional prevalence study at the Discipline of Hematology, Hospital São Paulo, Universidade Federal de São Paulo. METHODS: We investigated FMS-like tyrosine kinase 3/inte...

Isolated trisomy 11 in de novo acute myeloid leukemia

The real mechanism involved in trisomies and leukemogenesis remains unknown and more information about this connection is essential, but unfortunately the clinical outcome and hematological profile of patients with isolated trisomy 11 and AML have not been well characterized. Considering the limited data on the specific disease entity, the current report describes two cases of de novo acute monocytic leukemia (...