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Chronic lymphocytic leukemia (CLL) is a type of cancer that affects the blood and bone marrow. [8] [9] In CLL, the bone marrow makes too many lymphocytes, which are a type of white blood cell. [8] [9] In patients with CLL, B cell lymphocytes can begin to collect in their blood, spleen, lymph nodes, and bone marrow.
The key factor that distinguishes low-count CLL/SLL-MLB, high-count CLL/SLL-MLB, and CLL/SLL is the number of circulating monoclonal B cells, as described above. However, the other MLB phenotypes may progress to and/or be mimicked by various monoclonal B-cell lymphocyte malignancies.
One common definition of thrombocytopenia requiring emergency treatment is a platelet count below 50,000/μL. [5] Thrombocytopenia can be contrasted with the conditions associated with an abnormally high level of platelets in the blood – thrombocythemia (when the cause is unknown), and thrombocytosis (when the cause is known).
Pancytopenia usually requires a bone marrow biopsy in order to distinguish among different causes. [5] anemia: hemoglobin < 13.5 g/dL (male) or < 12 g/dL (female). leukopenia: total white cell count < 4.0 x 10 9 /L. Decrease in all types of white blood cells (revealed by doing a differential count). thrombocytopenia: platelet count < 150×10 9 /L.
Individuals with CLL/SLL are considered to be at an increased risk for developing RT if they have: 1) enlarged lymph nodes, liver, and/or spleen; 2) advanced stage disease; 3) low blood platelet counts and/or elevated serum beta-2-microglobulin levels; 4) CLL/SLL cells which develop deletions in the CDKN2A gene, disruptions of the TP53 gene ...
Pseudothrombocytopenia (PTCP) or spurious thrombocytopenia is an in-vitro sampling problem which may mislead the diagnosis towards the more critical condition of thrombocytopenia. The phenomenon may occur when the anticoagulant used while testing the blood sample causes clumping of platelets which mimics a low platelet count. [1]
Thrombocytopenia – a deficiency of platelets; Pancytopenia – when all three types of blood cells; red blood cells, white blood cells, and platelets, are all deficient. This is a life-threatening disorder that is a characteristic of aplastic anemia. [3] There are also two general causes of cytopenia: autoimmune and refractory.
Once the reactive causes of thrombocythemia are ruled out, clonal thrombocythemia should be considered. The most common cause of clonal thrombocythemia is a myeloproliferative neoplasm. These include: essential thrombocythemia, chronic myelogenous leukemia, polycythemia vera, and primary myelofibrosis. [8]
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