title: Primary cutaneous T-cell-rich B-cell lymphoma.
abstract: A 61-year-old man presented with a skin tumour in the right axilla of 2 months' duration. An excision biopsy revealed a malignant lymphoma, of diffuse mixed small and large cell type, morphologically suggestive of T-cell lymphoma, but shown to be a T-cell-rich B-cell lymphoma by subsequent immunohistochemical staining. A review of the literature revealed 47 cases of T-cell-rich B-cell lymphoma with descriptions of primary sites, 35 nodal and 12 extranodal, of which only one was a cutaneous primary.
authors.affiliation: First Department of Pathology, Saitama Medical School, Japan.
authors.forename: E
authors.initials: E
authors.lastname: Arai
authors.forename: M
authors.initials: M
authors.lastname: Sakurai
authors.forename: H
authors.initials: H
authors.lastname: Nakayama
authors.forename: S
authors.initials: S
authors.lastname: Morinaga
authors.forename: I
authors.initials: I
authors.lastname: Katayama
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D016393:Lymphoma, B-Cell / Q000473:pathology*; D008228:Lymphoma, Non-Hodgkin / Q000473:pathology; D016410:Lymphoma, T-Cell, Cutaneous / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000473:pathology*; D013601:T-Lymphocytes / Q000473:pathology*