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Patients with acute eosinophilic leukemia have a propensity for developing bronchospasm as well as symptoms of the acute coronary syndrome and/or heart failure due to eosinophilic myocarditis and eosinophil-based endomyocardial fibrosis. [1] [2] Hepatomegaly and splenomegaly are more common than in other variants of AML.
The overly stimulated CFU-Eos cells mature to apparently normal appearing but possibly overactive eosinophils which enter the circulation and may accumulate in and damage various tissues. The disorder is usually indolent or slowly progressive but may proceed to a leukemic phase sometimes classified as acute eosinophilic leukemia.
The latter diagnostic features include clonal cytogenetic abnormalities and molecular genetic abnormalities diagnostic for other forms of leukemia or the presence of myeloblast counts greater than 55% in bone marrow or 2% in blood. Chronic eosinophilic leukemia may transform into acute eosinophilic or other types of acute myelogenous leukemia.
Specialty: Hematology and oncology: Symptoms: Bleeding, bruising, fatigue, fever, increased risk of infections [2] Usual onset: All ages, [3] most common in 60s and 70s. [4] It is the most common malignant cancer in children, but the cure rates are also higher for them.
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Conventionally, a leukocytosis exceeding 50,000 WBC/mm 3 with a significant increase in early neutrophil precursors is referred to as a leukemoid reaction. [2] The peripheral blood smear may show myelocytes, metamyelocytes, promyelocytes, and rarely myeloblasts; however, there is a mixture of early mature neutrophil precursors, in contrast to the immature forms typically seen in acute leukemia.
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Types of eosinophilic leukemia include: Chronic eosinophilic leukemia; Acute eosinophilic leukemia; Clonal eosinophilia This page was last edited on 11 May 2022, at ...