title: Extranodal marginal zone lymphoma of the dura mater with IgH/MALT1 translocation and review of literature.
abstract: Primary central nervous system lymphoma (PCNSL) is an extranodal non-Hodgkin lymphoma involving brain, intraocular structures and spinal cord, without evidence of systemic disease. The majority of PCNSLs are diffuse large B-cell type. We encountered a rare case of primary dural marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) with extension into the brain in a 59-year-old man. A magnetic resonance imaging scan showed a 22-mm tumor located in the left posterior temporal lobe extending from the dura. Histopathology revealed a lymphoplasmacytic infiltration of the dura and the brain parenchyma in a perivascular pattern. Immunohistochemical and in situ hybridization studies showed a B-cell phenotype with kappa light chain restriction. Fluorescent in situ hybridization study showed a t(14;18)(q32;q21) with immunoglobulin heavy-chain/MALT1 fusion. The molecular study for immunoglobulin heavy-chain gene rearrangement by polymerase chain reaction showed a clonal gene rearrangement.
authors: Department of Anatomic Pathology, William Beaumont Hospital, Royal Oak, MI, 48076, USA.
authors: Sharathkumar
authors: S
authors: Bhagavathi
authors: Timothy C
authors: TC
authors: Greiner
authors: Syed A
authors: SA
authors: Kazmi
authors: Kai
authors: K
authors: Fu
authors: Warren G
authors: WG
authors: Sanger
authors: Wing C
authors: WC
authors: Chan