title: Mantle cell lymphoma arising within primary nodal marginal zone lymphoma: a unique presentation of two uncommon B-cell lymphoproliferative disorders.
abstract: Mantle cell lymphoma and primary nodal marginal zone lymphoma are uncommon tumors thought to arise within discrete anatomic compartments of the B-cell follicle. We report an unusual composite lymphoma comprised of these two neoplasms within an isolated lymph node in a 72-year-old woman. Strikingly, both tumors were completely confined to the respective microanatomic sites of their proposed nonneoplastic lymphoid counterparts, in keeping with early detection of these lesions. The tumors were distinguished by a combination of morphologic, phenotypic, and cytogenetic findings, and the presence of dual, unrelated neoplasms was confirmed by molecular diagnostic studies. After local radiation treatment, there was no recurrence or evidence of systemic disease over more than 2 years. These findings underscore the unique characteristics of these B-cell tumors and support the notion that early in disease development both neoplasms are confined to the distinct anatomic compartments of their postulated normal B-cell counterparts.
authors.affiliation: Department of Pathology, Brigham & Women's Hospital, Amory Building, 3rd floor, Boston, MA 02115, USA.
authors.forename: Scott J
authors.initials: SJ
authors.lastname: Rodig
authors.forename: Barbara M
authors.initials: BM
authors.lastname: Healey
authors.forename: Geraldine S
authors.initials: GS
authors.lastname: Pinkus
authors.forename: Frank C
authors.initials: FC
authors.lastname: Kuo
authors.forename: Paola
authors.initials: P
authors.lastname: Dal Cin
authors.forename: Jeffery L
authors.initials: JL
authors.lastname: Kutok
mesh_terms: D000368:Aged; D018956:CD5 Antigens / Q000032:analysis; D002880:Chromosomes, Human, Pair 11 / Q000235:genetics; D002883:Chromosomes, Human, Pair 14 / Q000235:genetics; D019938:Cyclin D1 / Q000032:analysis / Q000235:genetics; D005260:Female; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007150:Immunohistochemistry; D017404:In Situ Hybridization, Fluorescence; D051917:Leukosialin / Q000032:analysis; D016393:Lymphoma, B-Cell / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D020522:Lymphoma, Mantle-Cell / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D009378:Neoplasms, Multiple Primary / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D016133:Polymerase Chain Reaction; D014178:Translocation, Genetic
chemical_list: D018956:CD5 Antigens; D007143:Immunoglobulin Heavy Chains; D051917:Leukosialin; D019938:Cyclin D1