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Aplastic anemia is a rare, noncancerous disorder in which the blood marrow is unable to adequately produce blood cells required for survival. [44] [45] It is estimated that the incidence of aplastic anemia is 0.7–4.1 cases per million people worldwide, with the prevalence between men and women being approximately equal. [46]
Pure red cell aplasia (PRCA) or erythroblastopenia refers to a type of aplastic anemia affecting the precursors to red blood cells but usually not to white blood cells. In PRCA, the bone marrow ceases to produce red blood cells. There are multiple etiologies that can cause PRCA. The condition has been first described by Paul Kaznelson in 1922. [1]
Aplastic anemia patients present with symptoms related to a decrease in hematopoietic cell production in the bone marrow. The onset is gradual, and the first symptom is frequently anemia or bleeding, though a high temperature or infections may be present at the onset. The following are examples of specific manifestations: [12]
Aplastic anemia [35] affects all kinds of blood cells. Fanconi anemia is a hereditary disorder or defect featuring aplastic anemia and various other abnormalities. Anemia of kidney failure [35] due to insufficient production of the hormone erythropoietin; Anemia of endocrine disease [36] Disturbance of proliferation and maturation of erythroblasts
In this selected cases even with severe anemia blood product transfusions can be avoided and vitamin B12 treatment itself suffice. [7] In other situations like acute leukemia, Myelodysplastic syndrome, aplastic anemia etc. disease specific therapy is needed. [8]
The following is a differential diagnosis for patients in which reticulocytopenia is the most marked cytopenia. For conditions that lead to significant reduction in all three cell lineages, see pancytopenia or aplastic anemia. Parvovirus B19 infection [5] Transient Erythroblastopenia of Childhood [4] Pure red cell aplasia [6]
Refractory cytopenia of childhood is a subgroup of myelodysplastic syndrome (MDS), having been added to the World Health Organization classification in 2008. Before then, RCC cases were classified as childhood aplastic anemia.
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. Autoimmune cytopenia is caused by an autoimmune disease when your body produces antibodies to destroy the healthy blood cells.