Joan Guitart, MD

A 49-year-old Caucasian man presented with progressing erythematous plaques on the face and neck in December 2007. He was treated with topical steroids, presumably for dermatitis, without improvement.

A 31-year-old man presented in May 2007 with generalized painful, ulcerated, and necrotic papules and plaques worsening for the last few months. He had been diagnosed with mycosis fungoides in October 2005. Treatments included topical corticosteroids and psoralen with ultraviolet A light therapy (PUVA), with the latter being discontinued because of the development of blisters. For the last 6 months, he had been treated with oral bexarotene (Targretin), with initial improvement of his skin lesions.

The spectrum of CD30+ lymphoproliferative diseases of the skin includes CD30+ cutaneous anaplastic large cell lymphoma, lymphomatoid papulosis, as well as borderline cases. These entities constitute the second most common group of cutaneous lymphomas according to the newly revised World Health Organization and European Organisation for Research and Treatment of Cancer consensus classification. Recent progress in immune and molecular biology, and identification of therapeutic targets have increased our understanding of these diseases and have led to novel treatment approaches. This review will provide an update on recent findings of immunologic, molecular, cytogenetic features and treatment strategies for patients with CD30+ lympho-proliferative diseases.

Cutaneous lymphomas comprise a spectrum of diseases characterized by infiltration of the skin by malignant lymphocytes. The clinical manifestations of cutaneous lymphomas vary, and they can mimic benign dermatoses,