title: Granuloma annulare associated with cutaneous marginal zone lymphoma:  a case linking a hematologic malignancy with granulomatous dermatitis.
abstract: Granuloma annulare and other granulomatous disorders have been reported to be associated with internal malignancies, primarily T-cell lymphomas, whereas very few reports of granulomatous disorders in association with B-cell lymphoma exist in the literature. We report a case of marginal zone lymphoma, a cutaneous B-cell lymphoma that occurred concomitantly with refractory granuloma annulare. This case highlights the importance of considering both B- and T-cell dyscrasias in the case of refractory or extensive granulomatous lesions and the importance of histopathologic examination in the evaluation of these lesions.
authors.affiliation: Department of Dermatology, University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: Karolyn A
authors.initials: KA
authors.lastname: Wanat
authors.forename: Rosalie
authors.initials: R
authors.lastname: Elenitsas
authors.forename: Ellen J
authors.initials: EJ
authors.lastname: Kim
authors.forename: Misha
authors.initials: M
authors.lastname: Rosenbach
mesh_terms: D005260:Female; D016460:Granuloma Annulare / Q000150:complications* / Q000473:pathology; D006801:Humans; D018442:Lymphoma, B-Cell, Marginal Zone / Q000150:complications* / Q000473:pathology; D008875:Middle Aged; D012878:Skin Neoplasms / Q000150:complications* / Q000473:pathology