Cutaneous Pseudolymphomas

Cutaneous pseudolymphoma is a term used to describe skin lesions that bear a clinic and/or histopathologic resemblance to lymphoma. Cutaneous pseudolymphoma is mainly classified as two major categories, including mixed B and T cell pseudolymphomas, and T cell pseudolymphomas. Cutaneous pseudolymphomas may be divided into various subtypes according to the clinical and histopathological features. Although there is not a common consensus about the classification of clinicopathological subtypes, cutaneous pseudolymphomas in this article are mentioned as cutaneous lymphoid hyperplasia, Kimura's disease, angiolymphoid hyperplasia with eosinophilia, Castleman disease, pseudo mycosis fungoides, lymphomatoid contact dermatitis, and Jessner’s lymphocytic infiltration of the skin. The distinction of cutaneous pseudolymphomas from cutaneous lymphomas is very important. Because there are remarkable differences in the aspect of clinical course, prognosis and therapy modalities.