title: Non-mediastinal grey zone lymphomas and report from the workshop.
abstract: Grey zone lymphomas represent borderline lesions between classical Hodgkin lymphoma (cHL) and other morphologically and immunophenotypically related diseases and entities like nodular lymphocyte predominant HL, T-cell rich B-cell lymphoma, ALK-negative anaplastic large cell lymphoma (ALCL), diffuse large B cell lymphoma (DLBCL) anaplastic variant and primary mediastinal LBCL. The sharp definition of morphological, immunophenotypical and molecular features of the "text-book cases" of each disease and the comparison with grey zone cases has reduced most of the latter cases. Two reports in this workshop dealt with the problematic non-mediastinal grey zone lymphomas, one with a cHL of T cell-type presenting in the skin as a ALK-negative ALCL and the other with the grey zone between cHL of B-cell type and ALK-negative ALCL.
authors: Institute of Pathology, Campus Benjamin Franklin, Charité Universitätsmedizin Berlin. harald.stein@charite.de
authors: Harald
authors: H
authors: Stein
authors: Korinna
authors: K
authors: Jöhrens
authors: Ioannis
authors: I
authors: Anagnostopoulos
mesh_terms: D004493:Education; D006689:Hodgkin Disease / Q000145:classification* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000145:classification* / Q000473:pathology / Q000503:physiopathology