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Megaloblastic anemia is a type of macrocytic anemia. An anemia is a red blood cell defect that can lead to an undersupply of oxygen. [1] Megaloblastic anemia results from inhibition of DNA synthesis during red blood cell production. [2] When DNA synthesis is impaired, the cell cycle cannot progress from the G2 growth stage to the mitosis (M ...
An Addisonian crisis (or Addison's crisis) is an acute, life-threatening crisis caused by Addison's disease. Pernicious anemia as described in 1849 by Addison is now also known as Addison-Biermer disease. It is a type of megaloblastic anemia, in which a lack of intrinsic factor causes absorption of vitamin B 12 to be impaired.
Other disorders which cause macrocytosis without DNA replication problems (i.e., non-megaloblastic macrocytic anemias), are disorders associated with increased red cell membrane surface area, such as pathologies of the liver and spleen which produce codocytes or "target cells" which have a central collection of hemoglobin surrounded by a pallor (a thin area) then followed by a thicker ...
Aplastic crisis with dramatic fall in hemoglobin level and (reticulocyte count)-decompensation, usually due to maturation arrest and often associated with megaloblastic changes; may be precipitated by infection, such as influenza, notably with parvovirus B19. Folate deficiency caused by increased bone marrow requirement.
The presence of hypersegmented neutrophils is an important diagnostic feature of megaloblastic anaemias. Hypersegmentation can also be seen in many other conditions but with relatively less diagnostic significance. Hypersegmentation can sometimes be difficult to assert since interobserver variation is high and segmentation may vary with race.
Megaloblastic anemia: D51.1, D52.0, D53.1: 29507: Megaloblastic anemia (or megaloblastic anaemia) is an anemia of macrocytic classification that results from inhibition of DNA synthesis in red blood cell production. [10] Microangiopathic hemolytic anemia: Minkowski-Chauffard syndrome: Myelophthisic anemia: D61.9
Thiamine responsive megaloblastic anemia syndrome (also known as Rogers syndrome) is a very rare autosomal recessive genetic disorder affecting a thiamine transporter, which is characterized by megaloblastic anemia, diabetes mellitus, and hearing loss. The condition is treated with high doses of thiamine (vitamin B1).
Lubani Al Saleh Teebi syndrome also known as cystic fibrosis-gastritis-megaloblastic anemia syndrome is a very rare autosomal recessive genetic disorder which consists of cystic fibrosis, helicobacter pylori-associated gastritis, folate-deficiency megaloblastic anemia and intellectual disabilities.