[Sézary syndrome with ascitis: case report and review of the literature].

This case report describes the evolution of a mycosis fungoides into a Sézary syndrome. The originality of the case consists in the appearance of ascitis with Sézary cells during the leukemic phase. It is the second report of a such case. Mycosis fungoides and its leukemic variant, the Sézary syndrome, are primary cutaneous T-cell lymphomas. Their incidence is low. The treatments are topical in the early stages and systemic during the advanced stages. New immunomodulating treatments are in development. The existing therapeutic agents unfortunately do not improve the prognosis of the disease today.