title: The development of a Ki-1-positive large cell non-Hodgkin's lymphoma in pagetoid reticulosis.
abstract: A case of the disseminated variant of pagetoid reticulosis is described which progressed after many years of disease to a large cell anaplastic (Ki-1) lymphoma of T-cell type. The lymphoma cells showed abnormal cellular DNA and a high proliferative rate, as revealed by immunophenotypic examination and single-cell DNA measurements. The cells were positive for activation associated antigens and expressed a T-helper/inducer phenotype. A similar phenotype was expressed by the neoplastic cells in the co-existing lesions of pagetoid reticulosis. These findings support the view that pagetoid reticulosis is a variant of the cutaneous T-cell lymphomas which originates from activated lymphoid cells and which may on occasion progress to a potentionally more aggressive lymphoid malignancy.
authors.affiliation: Department of Pathology, University of Copenhagen, Denmark.
authors.forename: E
authors.initials: E
authors.lastname: Ralfkiaer
authors.forename: K
authors.initials: K
authors.lastname: Thomsen
authors.forename: N
authors.initials: N
authors.lastname: Agdal
authors.forename: K
authors.initials: K
authors.lastname: Hou-Jensen
authors.forename: G L
authors.initials: GL
authors.lastname: Wantzin
mesh_terms: D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D000951:Antigens, Neoplasm / Q000032:analysis*; D004273:DNA, Neoplasm / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000276:immunology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011230:Precancerous Conditions / Q000276:immunology*; D012008:Recurrence; D012871:Skin Diseases / Q000235:genetics / Q000276:immunology / Q000473:pathology*; D012878:Skin Neoplasms / Q000235:genetics / Q000276:immunology / Q000473:pathology*
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D000951:Antigens, Neoplasm; D004273:DNA, Neoplasm