[Extramedullary hematopoiesis in inguinal lymph nodes in the course of osteomyelofibrosis--case report].

Osteomyelofibrosis (OMF) is a chronic myeloproliferative disorder characterized by bone marrow fibrosis, suppression of hematopoiesis and extramedullary hematopoiesis. Extramedullary hematopoiesis usually occurs in spleen and liver, however it may be observed in another sites. We present a patient with OMF accompanied by myeloid metaplasia in inguinal lymph nodes.