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  2. Macrocytic anemia - Wikipedia

    en.wikipedia.org/wiki/Macrocytic_anemia

    Macrocytic anemias have several causes but with the implementation of folic acid fortification in North America, folate deficiency has become a rare cause of megaloblastic macrocytic anemia in that part of the world. [1] In this region, Vitamin B 12 deficiency is a far more common cause of megaloblastic macrocytic anemia. [1]

  3. Megaloblastic anemia - Wikipedia

    en.wikipedia.org/wiki/Megaloblastic_anemia

    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 ...

  4. Folate deficiency - Wikipedia

    en.wikipedia.org/wiki/Folate_deficiency

    Signs of folate deficiency anemia most of the time are subtle. [4] Anemia (macrocytic, megaloblastic anemia) can be a sign of advanced folate deficiency in adults. [1] Folate deficiency anemia may result in feeling tired, weakness, changes to the color of the skin or hair, open sores on the mouth, shortness of breath, palpitations, lightheadedness, cold hands and feet, headaches, easy bleeding ...

  5. Anemia - Wikipedia

    en.wikipedia.org/wiki/Anemia

    Megaloblastic anemia, the most common cause of macrocytic anemia, is due to a deficiency of either vitamin B 12, folic acid, or both. [81] Deficiency in folate or vitamin B 12 can be due either to inadequate intake or insufficient absorption. Folate deficiency normally does not produce neurological symptoms, while B 12 deficiency does.

  6. Macroovalocyte - Wikipedia

    en.wikipedia.org/wiki/Macroovalocyte

    Macroovalocytes are enlarged, oval-shaped erythrocytes (red blood cells). They are not seen in healthy blood, and are most commonly seen in megaloblastic anemia. [1] In most instances, the macroovalocyte morphology is due to megaloblastic erythropoiesis (Vitamin B-12 or folate deficiency) but may be seen with dyserythropoiesis.

  7. Red blood cell distribution width - Wikipedia

    en.wikipedia.org/wiki/Red_blood_cell...

    It is mainly used to differentiate an anemia of mixed causes from an anemia of a single cause. Deficiencies of Vitamin B 12 or folate produce a macrocytic anemia (large cell anemia) in which the RDW is elevated in roughly two-thirds of all cases. However, a varied size distribution of red blood cells is a hallmark of iron deficiency anemia, and ...

  8. Hypersegmented neutrophil - Wikipedia

    en.wikipedia.org/wiki/Hypersegmented_neutrophil

    Neutrophil hypersegmentation is one of the earliest, most sensitive and specific signs of megaloblastic anemia (mainly caused by hypovitaminosis of vitamin B12 & folic acid). Nuclear hypersegmentation of DNA in neutrophils strongly suggests megaloblastosis when associated with macro-ovalocytosis.

  9. List of hematologic conditions - Wikipedia

    en.wikipedia.org/wiki/List_of_hematologic_conditions

    Pernicious anemia (also known as macrocytic achylic anemia, congenital pernicious anemia, juvenile pernicious anemia, and Vitamin B12 deficiency) is one of many types of the larger family of megaloblastic anemias. It is caused by loss of gastric parietal cells, and subsequent inability to absorb vitamin B 12.