[Changes in the variant of acute leukemia].

The authors describe a female patient with acute lymphoblastic leukemia. After the first chemotherapy cycle according to the VAMP program the patient developed a complete remission. Further on, repeated extramedullary relapses (neuroleukemia, involvement of the mammary gland tissue and lymph nodes of the mesentery) were observed over 7 years, the data of blood and bone marrow analyses being within normal. At the end of the disease the patient developed a relapse with changes in the blood and bone marrow, however the blast cells were sudan and peroxidase-positive i.e. could be classified as myeloblasts.