title: Twelve cases of Ki-1 positive anaplastic large cell lymphoma of skin.
abstract: In seven of 12 cases of Ber-H2 (Ki-1) positive anaplastic large cell non-Hodgkin's lymphoma (Ki-1 ALCL) disease remained localised to skin, and in five there was extracutaneous spread. Four patients had histological evidence of pre-existing or coexisting mycosis fungoides, and three patients had a long standing history of eczema or ichthyosis. In two cases the presence of a T phenotype was shown in frozen sections, and in a further six cases a T phenotype was firmly established in paraffin wax sections. Four patients died less than one year after presentation (two with disseminated lymphoma; two from other causes); one died at five years with widespread lymphoma and the remaining seven cases were alive one to 14 1/2 years after presentation. Three of the four patients with associated mycosis fungoides had prolonged survival, contrary to the findings of previous reports which suggest secondary Ki-1 ALCL behaves aggressively. The recognition of these tumours is important because of their relatively good prognosis. The diagnosis can be readily substantiated immunohistochemically, using a simple panel of antibodies.
authors.affiliation: Department of Histopathology, Christie Hospital and Holt Radium Institute, Manchester.
authors.forename: S S
authors.initials: SS
authors.lastname: Banerjee
authors.forename: J
authors.initials: J
authors.lastname: Heald
authors.forename: M
authors.initials: M
authors.lastname: Harris
mesh_terms: D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal; D015703:Antigens, CD / Q000032:analysis*; D000951:Antigens, Neoplasm / Q000032:analysis*; D015415:Biomarkers; D004485:Eczema / Q000150:complications; D005260:Female; D006801:Humans; D007057:Ichthyosis / Q000150:complications; D007150:Immunohistochemistry; D017730:Ki-1 Antigen; D008198:Lymph Nodes / Q000737:chemistry / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications / Q000276:immunology* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009182:Mycosis Fungoides / Q000150:complications; D012878:Skin Neoplasms / Q000150:complications / Q000276:immunology* / Q000473:pathology*
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000951:Antigens, Neoplasm; D015415:Biomarkers; D017730:Ki-1 Antigen