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Hemolytic anemia DAT negative thrombocytopenia

Pavankumar Tandra, Jairam Krishnamurthy, Vijaya Raj Bhatt, Kam Newman, James O Armitage, Mojtaba Akhtari
CLL has been defined as presence of more than 5000 small mature appearing monoclonal B lymphocytes with a specific immunophenotype in peripheral blood. It is a well-known fact that CLL is associated with autoimmune cytopenias. CLL cells are CD5(+) B lymphocytes, and usually are not the "guilty" cells which produce autoantibodies. T cell defect is another characteristic of CLL and the total number of T cells is increased, and there is inversion of the CD4/CD8 ratio. Autoimmune hemolytic anemia (AIHA) is the most common autoimmune complication of CLL and has been reported in 10-25% of CLL patients...
November 4, 2013: Mediterranean Journal of Hematology and Infectious Diseases
H Kondo, T Oyamada, A Mori, H Sumi, K Kurosu, E Kajii, A Mikata
A case of direct-antiglobulin-test (DAT)-negative auto-immune haemolytic anaemia (AIHA) and immune thrombocytopenia (ITP) associated with Hodgkin's disease (HD) is reported. A 52-year-old male was admitted with anaemia, thrombocytopenia, and lymphadenopathy. The patient was DAT negative, although he exhibited the clinical features of warm-type AIHA and elevated levels of red-blood-cell-associated IgG (RBC-IgG). The serum level of platelet-associated IgG (PA-IgG) was markedly increased. A biopsy specimen of the inguinal lymph nodes showed HD of mixed cellularity...
2001: Acta Haematologica
T Robak, M Błasińska-Morawiec, E Krykowski, A Hellmann, L Konopka
Autoimmune haemolytic anaemia (AIHA) is one of the major complications in chronic lymphocytic leukaemia (CLL). Treatment with alkylating agents and the adenosine analogue, fludarabine, might trigger the development of AIHA in CLL patients despite the reduction of leukaemic clone. The influence of 2-chlorodeoxyadenosine (2-CdA) on AIHA in patients with CLL is undefined so far. In a group of 114 patients treated at our clinics with this agent, AIHA with direct antiglobulin test (DAT) positively was observed in 25 (21...
February 1997: European Journal of Haematology
P S Ganly, M A Laffan, I Owen, J M Hows
A patient presented with haemolytic anaemia and a negative direct antiglobulin test (DAT), and was found to have an IgG antibody with anti-Jka specificity in his serum. His red cells were typed as Jk(a-b+). Later he developed idiopathic thrombocytopenic purpura (ITP), and had a positive DAT due to anti-Jka bound to his red cells, which now typed as Jk(a+b+). Family studies suggested that the patient's true type was Jk(a+b+). Splenectomy and immunosuppression were required to treat the thrombocytopenia. The autoanti-Jka was no longer detectable following therapy...
August 1988: British Journal of Haematology
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