Rosai-Dorfman disease (RDD) is a benign histiocytosis that rarely manifests as a purely cutaneous form. Its differential diagnosis and treatment can pose a challenge to both clinicians and pathomorphologists. We present the case of a 69-year-old woman with cutaneous RDD presenting as multiple nodules on the right thigh who was treated with low-dose methotrexate weekly for > 1 year with a partial response.
Keywords: Cutaneous Rosai-Dorfman disease; Histiocytosis; Methotrexate.
© 2021. The Author(s).