Microcytosis

Microcytosis
Classification and external resources
DiseasesDB	8192

Microcytosis is a condition where red blood cells are unusually small when their mean corpuscular volume is measured.^[1]

It is also known as "microcythemia".^[2]

When associated with anemia, it is known as microcytic anemia.

Microcytic anemia is not caused by reduced DNA synthesis (source).

Thalassemia can cause microcytosis. Depending upon how the terms are being defined, thalassemia can be considered a cause of microcytic anemia, or it can be considered a cause of microcytosis but not a cause of microcytic anemia.

See also

• Macrocytosis

References

1. ^ Mach-Pascual S, Darbellay R, Pilotto PA, Beris P (July 1996). "Investigation of microcytosis: a comprehensive approach". Eur. J. Haematol. 57 (1): 54–61. doi:10.1111/j.1600-0609.1996.tb00490.x. PMID 8698132. 
2. ^ "microcythemia" at Dorland's Medical Dictionary

↓

Anemia	Nutritional Micro-: Iron deficiency anemia (Plummer-Vinson syndrome) Macro-: Megaloblastic anemia (Pernicious anemia) Hemolytic (mostly Normo-) Hereditary enzymopathy: G6PD · glycolysis (PK, TI, HK) hemoglobinopathy: Thalassemia (alpha, beta, delta)  · Sickle-cell disease/trait · HPFH membrane: Hereditary spherocytosis (Minkowski-Chauffard syndrome) · Hereditary elliptocytosis (Southeast Asian ovalocytosis) · Hereditary stomatocytosis Acquired Autoimmune (WAHA, CAD, PCH) membrane (PNH) MAHA · TM (HUS) Drug-induced autoimmune · Drug-induced nonautoimmune Hemolytic disease of the newborn Aplastic (mostly Normo-) Hereditary: Fanconi anemia · Diamond–Blackfan anemia Acquired: PRCA · Sideroblastic anemia · Myelophthisic Blood tests MCV (Normocytic, Microcytic, Macrocytic) · MCHC (Normochromic, Hypochromic)
Other	Methemoglobinemia · Sulfhemoglobinemia · Reticulocytopenia

Coagulation/
coagulopathy

↑	Hyper- coagulability primary: Antithrombin III deficiency · Protein C deficiency/Activated protein C resistance/Protein S deficiency/Factor V Leiden · Hyperprothrombinemia acquired:Thrombocytosis (essential) · DIC (Congenital afibrinogenemia, Purpura fulminans) · autoimmune (Antiphospholipid)
↓	Hypo- coagulability Thrombocytopenia Thrombocytopenic purpura: ITP (Evans syndrome) · TM (TTP) Heparin-induced thrombocytopenia · May-Hegglin anomaly Platelet function adhesion (Bernard–Soulier syndrome) · aggregation (Glanzmann's thrombasthenia) · platelet storage pool deficiency (Hermansky–Pudlak syndrome, Gray platelet syndrome) Clotting factor Hemophilia (A/VIII, B/IX, C/XI) • Von Willebrand disease • Hypoprothrombinemia/II · XIII · Dysfibrinogenemia

M: MYL cell/phys (coag, heme, immu, gran), csfs rbmg/mogr/tumr/hist, sysi/epon, btst drug (B1/2/3+5+6), btst, trns