In a case of immunoblastic lymphoma we observed the presence of either a deletion of the long arm of chromosome 6 or of an isochromosome, i(6p), which occurred alternatively in metaphase cells. This suggests a selective pressure for loss of heterozygosity of genes located on 6q and is in accordance with the hypothesis that one or more tumor suppressor genes might be located on the long arm chromosome 6.
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http://dx.doi.org/10.1016/0165-4608(94)00218-z | DOI Listing |
Indian J Pathol Microbiol
January 2025
Department of Oncopathology, Mahamana Pandit Madan Mohan Malaviya Cancer Centre and Homi Bhabha Cancer Hospital, Varanasi, Uttar Pradesh, India.
ALK-positive large B-cell lymphoma (ALK+ LBCL) is a rare neoplasm with an aggressive course and poor therapeutic response to the standard R-CHOP regimen. Owing to its negativity for usual B- and T-cell markers and immunopositivity for epithelial markers, it can be easily misdiagnosed if it is not contemplated. To study the clinicopathological parameters of cases of ALK+ LBCL diagnosed at our institution.
View Article and Find Full Text PDFBlood Cancer J
December 2024
Lymphoma Center, Department of Hematology, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Angioimmunoblastic T-cell lymphoma (AITL) is a kind of aggressive T-cell lymphoma with significant enrichment of non-malignant tumor microenvironment (TME) cells. However, the complexity of TME in AITL progression is poorly understood. We performed single-cell RNA-Seq (scRNA-seq) and imaging mass cytometry (IMC) analysis to compare the cellular composition and spatial architecture between relapsed/refractory AITL (RR-AITL) and newly diagnosed AITL (ND-AITL).
View Article and Find Full Text PDFCureus
November 2024
Internal Medicine, Sri Ramachandra Medical College, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND.
Diffuse large B-cell lymphoma (DLBCL) is the most common type of immunoblastic lymphoma associated with AIDS, with the stomach being the most frequent extranodal site of involvement. Despite the widespread use of combined antiretroviral therapy (cART), the incidence of systemic lymphomas remains relatively high. These lymphomas often present in the early stages of AIDS as high-grade malignancies.
View Article and Find Full Text PDFAm J Surg Pathol
December 2024
Department of Hematopathology, The University of Texas MD Anderson Cancer Center.
B-cell and plasma cell proliferations are frequently observed in nodal T follicular helper (nTfh) cell lymphomas and can present a diagnostic challenge. These proliferations can be monotypic or monoclonal and morphologically resemble lymphoma or plasmacytoma, but their clinical behavior is poorly defined. In this study, we reviewed 414 cases of nTfh lymphoma seen over the past decade at our institution.
View Article and Find Full Text PDFUnlabelled: Epstein-Barr virus (EBV) is associated with multiple types of cancers, many of which express the key viral oncoprotein Latent Membrane Protein 1 (LMP1). LMP1 is the only EBV-encoded protein whose expression is sufficient to transform both epithelial and B-cells. Although metabolism reprogramming is a cancer hallmark, much remains to be learned about how LMP1 alters lymphocyte oncometabolism.
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