[Kaposi's sarcoma during local and general steroid therapy for psoriasis (author's transl)].

The authors describe a new case of Kaposi's sarcoma associated with psoriasis. The patient (a 68-year-old Nord-African man) had suffered from psoriasis for 14 years and had applied local betamethasone or fluocinolone for 125 months when Kaposi's sarcoma occurred. The association between these two diseases is discussed. The role of local steroid therapy and the immunological abnormality occurring in psoriasis are analyzed in order to explain the association between psoriasis and Kaposi's sarcoma or other malignant diseases.