title: CD30 expression is common in mediastinal large B-cell lymphoma.
abstract: Large B-cell lymphoma manifesting in the mediastinum shows distinctive clinical and immunophenotypic features and is recognized as a unique type of large B-cell lymphoma in the Revised European-American Lymphoma classification. Fifty-one cases of primary mediastinal large B-cell lymphoma were retrieved from the immunodiagnosis laboratory database files and were stained with anti-CD30 (Ber-H2). Of the 51 cases, 35 (69%) stained for CD30. This staining ranged from strong membrane staining of all or almost all of the neoplastic cells to positivity of rare individual cells. Eleven cases (22%) were negative; 4 (8%) were equivocal. Only 1 case was uninterpretable owing to B-5 fixation and lack of a positive internal control. Thus, the majority of mediastinal large B-cell lymphomas express the Hodgkin marker CD30. This finding may result in misdiagnosis of large cell lymphoma as Hodgkin disease.
authors.affiliation: Department of Pathology, Stanford University Medical Center, CA 94305, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Higgins
authors.forename: R A
authors.initials: RA
authors.lastname: Warnke
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000951:Antigens, Neoplasm / Q000032:analysis; D003937:Diagnosis, Differential; D005260:Female; D006689:Hodgkin Disease / Q000175:diagnosis; D006801:Humans; D007124:Immunoenzyme Techniques; D017730:Ki-1 Antigen / Q000032:analysis / Q000378:metabolism*; D017493:Leukocyte Common Antigens / Q000032:analysis; D016256:Lewis X Antigen / Q000032:analysis; D016393:Lymphoma, B-Cell / Q000737:chemistry / Q000378:metabolism* / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000737:chemistry / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008479:Mediastinal Neoplasms / Q000737:chemistry / Q000378:metabolism*; D008875:Middle Aged
chemical_list: D000951:Antigens, Neoplasm; D017730:Ki-1 Antigen; D016256:Lewis X Antigen; D017493:Leukocyte Common Antigens