Long-term remission after autologous stem-cell transplantation for relapsed histiocytic sarcoma.

Histiocytic sarcoma is diagnosed according to established criteria. However, treatment is controversial: although lymphoma chemotherapy regimens are often used, their impact on the natural history of the disease is unclear. Here, we report a disease-free survival of 2 years after autologous stem-cell transplantation in a patient with relapsed histiocytic sarcoma.