Chagas disease in a recipient of cord blood transplantation.
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Biomedical subjects
Publications and source records attributed to I Krsnik.
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A 56-year-old woman with an acute promyelocytic leukemia (APL) developed a severe all-trans-retinoic (ATRA) syndrome on day 17 of treatment. Shortly after, she presented a picture of pancytopenia, hepatosplenomegaly, increased triglycerides, ferritin, and liver enzymes. A bone marrow biopsy showed abundant macrophages and no evidence of leukemia. Tests for secondary hemophagocytic syndrome (HPS) were negative. A diagnosis of HPS was made. Treatment with dexamethasone and high-dose immunoglobulins was unsuccessful. Consolidation chemotherapy with idarubicin and ATRA rapidly reversed the HPS. The HPS in this patient could be related to the release of macrophage-stimulating cytokines by APL cells during ATRA syndrome.
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We report a case of primary thrombocythaemia showing a translocation t(4; 6)(q21; q27) five years after diagnosis. The patient had been treated with hydroxyurea. The clinical picture at the time was consistent with transformation. Karyotypic abnormalities are rare in this disease and are reviewed.
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A 32-year-old male developed severe autoimmune thrombocytopenia refractory to conventional immunosuppression. He had been treated with radiotherapy for stage I-A Hodgkin's disease (HD) 2 years earlier after a staging laparotomy and splenectomy. A 3-cm accessory spleen was detected using computed tomography scan and 99mTc scintigraphy. Resection resulted in normalization of the platelet counts. Two years later the patient remains in remission of both diseases. Immune thrombocytopenia is rarely associated with HD and its remission following resection of an accessory spleen is an unusual finding.
We report a case of acute myeloid leukemia (M5a of the FAB classification), secondary to the myelodysplastic syndrome, showing a deletion of the short arm of chromosome 2 at p23 in the bone marrow cells. In addition, a duplication of chromosome 13,dup(13)(q12q14) was found.
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We report three cases of ANLL and one case of ALL in which we found chromosome abnormalities not previously described. The first patient had a (9;11;16)(p22;q23;p13) translocation in the relapse after bone marrow transplantation. In the second case, a secondary leukemia following a Wilms' tumor, there was a single chromosome anomaly, an inversion of chromosome 13. The third case also presented an isochromosome 13q. In the fourth patient we observed a translocation between two achrocentric chromosomes, as in the third patient, but not of the Robertsonian type: t(21;21)(q22.1;q22.5).
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The coagulation abnormalities in 20 cases of acute promyelocytic leukemia (APL) treated at a single institution were reviewed. A remarkably uniform picture of defibrination and increased FDPs with well-preserved levels of other coagulation factors including AT-III was seen. Our data, together with those available in the literature, do not support DIC as the underlying mechanism of bleeding but seem rather to point to increased proteolysis as the cause.
We report our eight year experience remission induction therapy in adult patients with acute myeloblastic leukemia. Overall 67 patients were treated, with a mean age of 43.3 years (range 15-75). Two treatment protocols were used. Complete remission (CR) was achieved in 23 patients of 39 receiving protocol A (58%). The 28 last patients were treated with the more aggressive protocol B, and CR was achieved in 23 patients (82%). CR was achieved in 68% of the overall group. The most outstanding predictive factors were age above 30 years, and M-5 morphology as indicating a poor prognosis.
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