Radiotherapy and stereotactic radiotherapy for multifocal intracranial and intramedullary Rosai–Dorfman disease

Background We present a case of a 51‐year‐old man affected by Rosai–Dorfman disease with multiple disseminated intraparenchymal and a single spinal cord localization, presenting with dysphasia and paraparesis. Case Presentation The patient elected to receive medical steroidal therapy and two radiotherapy cycles. Steroids allowed initial regression of some lesions, while radiotherapy constituted an optimal maintenance treatment. At 6‐year follow up, the patient did not develop any new neurological damage in respect to baseline. Conclusions Adjuvant therapy with radiotherapy and steroidal therapy is a valid option in multicentric Rosai–Dorfman disease patients not eligible for surgery.