It is mandatory to perform microscopic examinations of bone marrow aspirates during the diagnosis of many neoplastic haematopoiesis disorders. In 2008, The International Committee for Standardization in Hematology recommended the use of two types of slides for the microscopic evaluation of bone marrow: wedge-spread film and crush film slides. Because these techniques have not yet been compared, we performed such a comparison. Routine bone marrow samples from 250 patients diagnosed due to different neoplastic haematological disorders were evaluated. The major differences between the two compared techniques were identified in 13 patients with non-Hodgkin’s lymphoma, seven patients with systemic mastocytosis and 11 patients with acute leukaemias or myelodysplastic syndromes or chronic myelomonocytic leukaemia. Differences were noted also in many patients with multiple myeloma, but the clinical significance of these discrepancies was rather modest. The major causes of the differences observed seemed to be the dilution of marrow with blood cells and the focal growth of many neoplastic cells. We believe that the crush technique is more advantageous compared to the wedge-spread films. Therefore, we recommend the use of crush films as the primary method for establishing a diagnosis or for making therapeutic decisions based on the microscopic examination of bone marrow.

Erythrophagocytosis by neutrophils is a rare morphological phenomenon described in patients with clonal malignancies of haematopoiesis with myelodysplasia and in some haemolytic conditions including paroxysmal cold haemoglobinuria, haemolysis caused by snake-bite, sickle cell anaemia and other defects of red cells. We describe a female patient who presented with acquired haemolytic anaemia. Erythrophagocytosis was found in around 35% of neutrophils of the peripheral blood. A similar picture was seen in the bone marrow, but with additional erythrophagocytosis by macrophages. These two processes were considered as the main causes of anaemia, but the first one seemed to be predominant. Malignancies, autoimmunisation disorders and infections were excluded. Immunosuppressive therapy with corticosteroids was implemented, but had to be stopped because of side effects. Long-term normalization of peripheral blood morphology was achieved after splenectomy. Splenectomy may be considered a therapeutic option for patients with diagnosed neutrophil erythrophagocytic hyperactivity. Therapy with corticosteroids is also possible, but the long-term effects remain unknown.

Przedmiotem opracowania jest wyznaczenie determinant polityki dywidend spółek z sektorów energetycznego i paliwowego notowanych na Giełdzie Papierów Wartościowych w Warszawie. W tym celu zdefiniowano czynniki stymulujące i czynniki destymulujące wypłaty dywidend przez przedsiębiorstwa oraz określono zmienną objaśnianą i zmienne objaśniające, które umożliwiły budowę modelu regresji. Podjęto próbę zweryfikowania czynników o największym wpływie na decyzje o wypłacie dywidend w wybranych spółkach wraz z określeniem powodów prowadzenia przez nie wybranej polityki dywidend.