Cutaneous lymphomas and pseudolymphomas: newly described entities

This chapter summarizes some recently described cutaneous lymphomas and pseudolymphomas with regard to their clinicopathological presentation, biological behavior and classification place. Among cutaneous lymphomas, the group of cytotoxic lymphomas, angioimmunoblastic T-cell lymphoma, intravascular lymphoma, hydroa-like lymphoma, marginal zone lymphoma, spindle-cell B-cell lymphoma, and B-cell lymphoma with a dermatomal distribution are presented. In the context of pseudolymphomas, cutaneous follicular lymphoid hyperplasia with monotypic plasma cells, pleomorphic reactions in molluscum contagiosum, and CD30+ reactions to parapoxvirus are discussed.