7/1/23, 12:43 AM Microcytosis Pathway Feedback Search Clinical Topics Home Findings Microcytosis Microcytosis More common causes Vitamin A deficiency Iron deficiency Vitamin C deficiency Less common causes Copper deficiency Beta thalassemia minor Sideroblastic anemia Homozygous beta thalassemia Hemoglobin E disease Iron-refractory iron deficiency anemia Heterozygous beta thalassemia Sickle cell-thalassemia disease Uncommon causes Hemoglobin H disease Hemoglobin Bart's 3-methylglutaconic aciduria type 5 https://web.pathway.md/findings/reckZlWTFmghHNK7s 1/2 7/1/23, 12:43 AM Microcytosis Pathway Alpha thalassemia trait Dialysis-related aluminium toxicity Hereditary pyropoikilocytosis https://web.pathway.md/findings/reckZlWTFmghHNK7s 2/2