Observational retrospective study of vascular modulator changes during treatment in essential thrombocythemia.

Essential thrombocythemia (ET) patients are at risk of developing thrombotic events. Qualitative platelet (PLT) abnormalities and activation of endothelial cells (ECs) and PLTs are thought to be involved. Microparticles (MPs) can originate from PLTs (PMPs), ECs (EMPs), or red cells (RMPs).

Role of blood cells dynamism on hemostatic complications in low-risk patients with essential thrombocythemia.

Patients with essential thrombocythemia (ET) aged less than 60 years, who have not suffered a previous vascular event (low-risk patients), may develop thrombotic or hemorrhagic events. So far, it has not been possible to identify useful markers capable of predicting which of these patients are more likely to develop an event and therefore who needs to be treated. In the present study, we analysed the relationship between vascular complications and longitudinal blood counts of 136 low-risk ET patients taken over a sustained period of time (blood cells dynamism).

Consolidation treatment with rituximab induces complete and persistent remission of mixed type Evans syndrome.

We describe a 58-year-old woman affected by immune thrombocytopenic purpura (ITP) since 1999, well controlled by low doses of steroid for 4 years, who experienced a relapse with severe mixed type Evans syndrome in March 2006. After an initial response to high doses of steroid, severe anaemia recurred 2 months later, this time resistant to second-line therapy with intravenous immunoglobulins (IVIG) and cyclophosphamide. So in May, we started the treatment with anti-CD20 monoclonal antibody rituximab with the dose of 375 mg/m2 once weekly for a total of four doses.

Pediatric patients with essential thrombocythemia are mostly polyclonal and V617FJAK2 negative.

Essential thrombocythemia (ET) is rare in children, and little or no information is available about clonality or JAK2 mutations. However, the analyses in this work prove useful for the diagnosis of adult myeloproliferative disorders (MPDs). We evaluated the clonality status and V617FJAK2 mutation in 20 children affected by ET and compared them with 47 consecutive adult ET cases.

Splenectomy after portal thrombosis in patients with polycythemia vera and essential thrombocythemia.

Background And Objectives: Polycythemia vera (PV) and essential thrombocythemia (ET) are two rare acquired myeloproliferative disorders (MPD) with frequent thrombotic and hemorrhagic complications. The occurrence of thrombosis in unusual sites, e.g.