[Granulocytic sarcoma with late transformation into acute myeloblastic leukemia--case report].

Case presentation of a 28-year-old patient with acute myeloblastic leukemia (FAB AML-M4), who underwent surgery of an inguinal tumor a year before the diagnosis of leukemia was made. In retrospective assessment a diagnosis of granulocytic sarcoma was made. After induction and consolidation chemotherapy he achieved complete hematological remission and underwent matched unrelated donor bone marrow transplantation. After six months he relapsed. A repeated induction chemotherapy resulted in hematological remission. During maintenance therapy symptoms that appeared suggested an extramedullary relapse.