Blastic Plasmacytoid Dendritic Cell Neoplasm

Clinical and biological presentation of patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN) is depicted to highlight criteria that might alert physicians. Diagnosis of BPDCN is still challenging and requires (1) immunophenotyping of blood or bone marrow aspiration using several markers (CD4, CD56, HLA-DR, myeloid and lymphoid lineage markers) and should include pDC markers such as CD123, cTCL1, CD303, and CD304, and/or (2) pathologic analysis of cutaneous lesions, also with immunohistochemistry using markers specific to BPDCN.
Source: Hematology/Oncology Clinics of North America - Category: Cancer & Oncology Authors: Source Type: research

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Abstract BACKGROUND: About 50 different CALR frameshift mutations have been identified in BCR-ABL1 negative MPN, all leading to the development of common new protein C terminus. Antibody targeting this terminal epitope can be useful to identify this driver mutation using immunohistochemistry. MATERIALS AND METHODS: CALR mutation analysis was carried out in 51 JAK2V617F negative cases, PMF (n = 22) and ET (n = 29). PCR followed by fragment analysis was performed for molecular detection of CALR mutation. Bone marrow biopsy specimens of corresponding patients were subjected to IHC using mutat...
Source: International Journal of Laboratory Hematology - Category: Hematology Authors: Tags: Int J Lab Hematol Source Type: research
Condition:   Lymphopenia Intervention:   Diagnostic Test: Complete blood picture, bone marrow aspiration cytology Sponsor:   Dr Medhat Khafagy Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
We report a six-month-old male with osteopetrosis where bone marrow examination and molecular studies allowed a definitive diagnosis. Microscopic examination of a bone marrow biopsy demonstrated increased bone formation at various stages of ossification, decreased marrow spaces, and increased osteoclasts rimming the bone. Next-generation sequencing (NGS) demonstrated that the patient was homozygous for mutations in theTCIRG1 gene, which encodes an osteoclast vacuolar proton pump and is the most common mutation associated with the autosomal recessive or infantile malignant form of osteopetrosis. The patient underwent a cord...
Source: Journal of Hematopathology - Category: Pathology Source Type: research
Abstract BRAF V600E is a disease defining mutation for hairy cell leukemia (HCL), which helps in its diagnosis and differentiation from morphologically similar splenic marginal zone lymphoma (SMZL) and HCL-variant (HCL-v). Forty eight cases:HCL(n = 34), SMZL(n = 11) and HCL-v(n = 3) were included. Of these, 32 were retrospective and 16 were prospective. DNA was extracted, in retrospective cases from cells obtained by smears from bone marrow aspirate/trephine imprint (BMA/BMTx) slides, and in prospective cases from peripheral blood (PB)/BMA samples. BRAF V600E mutation test...
Source: Molecular Biology Reports - Category: Molecular Biology Authors: Tags: Mol Biol Rep Source Type: research
Conclusion: The case presented shows apparent severe immune-mediated thrombocytopenia after intravitreal bevacizumab administration.
Source: Retinal Cases and Brief Reports - Category: Opthalmology Tags: Case Report Source Type: research
CONCLUSION: PET-CT may not have high sensitivity and specificity to identify bone marrow involvement for each type of cancer. The approach of using bone marrow biopsy and PET-CT as complementary modalities seems reliable. PMID: 32419409 [PubMed - in process]
Source: The Turkish Journal of Pediatrics - Category: Pediatrics Authors: Tags: Turk J Pediatr Source Type: research
Contributors : Quentin Heydt ; Chrysi Xintaropoulou ; Bela PatelSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensReprogramming of bone marrow microenvironments (BMMs) is a key process by which ALL cells gain resilience however the specific adaptations that facilitate primary disease and ALL survival after induction chemotherapy remain unclear. Using temporal analysis of clinical biopsies we identify that BM adipocytes are profoundly remodelled during ALL pathogenesis and treatment transitioning from cellular depletion within the primary leukaemia niche to a fully restored state upon re...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Homo sapiens Source Type: research
Authors: D'Souza RS, Li L, Leng S, Hunt C, Law L, Muir C, Eldrige J, Bydon M, Chi M, Shapiro S, Mauck WD, Qu W Abstract Bone marrow aspiration (BMA) through the iliac crest is potentially unsafe due to the vicinity of neurovascular structures in the greater sciatic notch. Our objective was to investigate the safety of a recently described BMA technique, specifically a trajectory from the posterior superior iliac spine (PSIS) to the anterior inferior iliac spine (AIIS). We conducted a chart review of 260 patients, analyzing three-dimensional reconstructed computed tomography images of the pelvis and sacrum to valida...
Source: Bosnian Journal of Basic Medical Sciences - Category: General Medicine Tags: Bosn J Basic Med Sci Source Type: research
We report a case of hepatosplenic T-cell lymphoma (HSTL) transplanted from an HLA-haploidentical daughter. A 51-year-old man was referred due to liver function test abnormalities and fever. He was confirmed to have γδ-type HSTL by bone marrow and liver biopsies. He was treated with five cycles of a CHOP regimen. Although metabolic complete response (CR), as defined by positron emission tomography, was achieved, his bone marrow still contained tumor cells on polymerase chain reaction (PCR). He underwent transplantation using unmanipulated peripheral blood stem cells from his HLA-haploidentical daughter. The prec...
Source: Journal of Clinical and Experimental Hematopathology : JCEH - Category: Hematology Tags: J Clin Exp Hematop Source Type: research
Conclusion In the Ki-67 proliferation index > 25% group, 18F FDG PET/CT was able to differentiate BMI independently from NHL subgroups. We recommend using this method with large patient groups. MTV and BMPET were independent prognostic indicators for OS and PFS and may help to determine high-risk patients.
Source: Nuclear Medicine Communications - Category: Nuclear Medicine Tags: Original Articles Source Type: research
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