Background: Primary cutaneous T cell lymphoma is a diverse and rare group of diseases with clinical manifestations that, if not biopsied, are easily confused benign skin diseases. Objective: To determine some features primary lymphomas classify them according to the 2018 update World Health Organization European Organisation for Research Treatment Cancer classification. Methods: case series stu...

Cutaneous B-cell infiltrates showing a prominent follicular growth pattern with germinal centers are thought by some authors to represent either marginal zone lymphomas with reactive germinal centers or pseudolymphomas. To establish whether a true primary cutaneous follicular lymphoma exists, we studied biopsies from 15 patients with skin lesions characterized histopathologically by the presenc...

Anaplastic large cell lymphoma (ALCL) designates a heterogeneous group of CD30(+) (systemic or primary cutaneous) peripheral T-cell lymphomas (PTCLs). A subgroup of systemic ALCL is transformed by anaplastic lymphoma kinase (ALK). We compared 24 ALK(+), 15 ALK(-) systemic, and 7 cutaneous ALCLs with 29 nonanaplastic PTCLs in terms of T-cell receptor (TCR) rearrangements, expression of TCRs and ...

© 2009 The Authors. doi: 10.2340/00015555-0663 Journal Compilation © 2009 Acta Dermato-Venereologica. ISSN 0001-5555 Sir, Mycosis fungoides (MF), a common form of primary cutaneous T-cell lymphoma (CTCL), is a type of to nonHodgkin’s lymphoma (HL). Although the coexistence of multiple distinct lymphoid neoplasms in the same individual is rare, cases of CTCL associated with HL or other types of ...

Bladder lymphomas are rarely primary tumours and more commonly associated with systemic lymphoma, either as nonlocalised bladder lymphoma or as secondary bladder lymphoma. Primary bladder lymphomas (PBL) tend to be low-grade mucosa-associated lymphoid tissue (MALT) type, contrasting with diffuse large cell or follicular centre cell types more commonly seen in secondary bladder lymphoma. Bladder...

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Introduction: Primary gastric lymphoma (PGL) is a rare tumor, whose differential diagnosis may become complicated without precise immunohistochemistry (IHC) and genetic analysis. Case Presentation: A 33-year-old woman presented with gastric cancer and had undergone gastrectomy without precise IHC and staging in another center. Inappropriate IHC after surgery showed diffuse large B-cell lymphom...