Lennert lymphoma.

Lancet

Published: October 1976

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http://dx.doi.org/10.1016/s0140-6736(76)90943-0DOI Listing

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Article Synopsis
  • Lennert lymphoma (LL) is a rare type of peripheral T-cell lymphoma that is often misdiagnosed due to unclear diagnostic criteria; careful examination of cytomorphology and immunohistochemistry is crucial for accurate diagnosis.
  • A case study highlights a patient diagnosed with LL through these methods, showing small to medium-sized CD4(+) T cells and no indicators of other T cell types, with notable histiocytes and EBV(+) cells present.
  • The patient achieved complete remission after chemotherapy and remained disease-free for five years, indicating that accurate diagnosis and treatment can lead to positive outcomes in LL cases.
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Assessing the efficacy and tolerability of PET-guided BrECADD versus eBEACOPP in advanced-stage, classical Hodgkin lymphoma (HD21): a randomised, multicentre, parallel, open-label, phase 3 trial.

Lancet

July 2024

Faculty of Medicine, University of Cologne, Cologne, Germany; Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf, University Hospital, Düsseldorf, Germany; German Hodgkin Study Group, Cologne, Germany.

Background: Intensified systemic chemotherapy has the highest primary cure rate for advanced-stage, classical Hodgkin lymphoma but this comes with a cost of severe and potentially life long, persisting toxicities. With the new regimen of brentuximab vedotin, etoposide, cyclophosphamide, doxorubicin, dacarbazine, and dexamethasone (BrECADD), we aimed to improve the risk-to-benefit ratio of treatment of advanced-stage, classical Hodgkin lymphoma guided by PET after two cycles.

Methods: This randomised, multicentre, parallel, open-label, phase 3 trial was done in 233 trial sites across nine countries.

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Introduction: Current molecular research has shown the several oncogenic pathways that give rise to the peripheral T-cell lymphoma, not otherwise defined (PTCL, NOS) subtypes, which alter prognosis and might have predictive value. This study was conducted to assess the immunohistochemistry (IHC) algorithm by Amador et al for the subtyping of PTCL, NOS and determine its applicability in relation to the clinicopathological profile.

Methods: This study included 43 patients with PTCL, NOS diagnosis.

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Lennert lymphoma (LeL) is a rare variant of peripheral T-cell lymphoma, not otherwise specified (PTCL/NOS) that is rich in epithelioid histiocytes. LeL may pose great diagnostic and therapeutic challenges to the pathologist and clinician. Primary extranodal soft tissue LeL is even rarer and has not been reported.

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Lennert lymphoma is a lymphoepithelioid variant of peripheral T-cell lymphoma (not otherwise specified) with characteristics that do not fit into other peripheral T-cell lymphoma categories. Lennert lymphoma is primarily a nodal disease, and skin involvement may be exhibited. Cutaneous manifestations in Lennert lymphoma are nonspecific and include erythematous papules, nodules, and small plaques.

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