Long-term evolution of cytophagic histiocytic panniculitis.

Background: Cytophagic histiocytic panniculitis is a disorder manifested by multiple subcutaneous nodules, characterized by lobular panniculitis, and occasionally accompanied by severe systemic manifestations, which require an aggressive medical approach. Several case reports with a good response to immunosuppressive therapy in the acute phase can be found in the literature.

Conclusions: Nevertheless, the long-term evolution of this entity has not been described yet, nor have precise recommendations regarding the most adequate posology and duration of therapy. We report the result of switching from a long-term cyclosporine therapy to tacrolimus in a patient with a severe form of cytophagic histiocytic panniculitis.