A Case of Cutaneous B-Cell Pseudolymphoma / 대한피부과학회지

ABSTRACT

The differentiation between cutaneous pseudolymphomas and primary cutaneous lymphomas is often very difficult, but it is important because each of them has different therapeutic consequences. We report herein a case of cutaneous B-cell pseudolymphoma probably induced by frequent use of hair dye which mimicked true B-cell lymphoma histologically. Histopathologic examination revealed diffuse, extensive infiltration of atypical B cells on the first biopsy, but 2 years later, a rebiopsy revealed well defined lymphoid follicles in the upper dermis. There was no monoclonality in immunoglobulin gene rearrangement. The skin lesions were resolved after one month with intra-lesional injection of triamcinolone.