title: Common acute lymphoblastic leukaemia-lymphoma expressing cytokeratin: a case report.
abstract: This report presents a case of common acute lymphoblastic leukaemia-lymphoma expressing low molecular weight cytokeratin but no leukocyte common antigen (CD45) in a 57-year-old man. The unusual morphology and clinical course together with the aberrant immunohistochemical results suggested a diagnosis of undifferentiated carcinoma. A detailed immunohistochemistry study on frozen and paraffin sections and molecular analysis prevented a diagnostic mistake.
authors.affiliation: Istituto di Anatomia Patologica, Università di Verona, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Menestrina
authors.forename: M
authors.initials: M
authors.lastname: Lestani
authors.forename: A
authors.initials: A
authors.lastname: Scarpa
authors.forename: G
authors.initials: G
authors.lastname: Viale
authors.forename: F
authors.initials: F
authors.lastname: Bonetti
authors.forename: G
authors.initials: G
authors.lastname: Pizzolo
authors.forename: M
authors.initials: M
authors.lastname: Chilosi
mesh_terms: D000911:Antibodies, Monoclonal; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000378:metabolism*; D017493:Leukocyte Common Antigens / Q000378:metabolism; D008223:Lymphoma / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D015452:Precursor B-Cell Lymphoblastic Leukemia-Lymphoma / Q000378:metabolism* / Q000473:pathology
chemical_list: D000911:Antibodies, Monoclonal; D007633:Keratins; D017493:Leukocyte Common Antigens