Macrocytic anemia
More common causes
Alcohol use disorder
Vitamin B12 deficiency
Hemolytic anemia
Folate deficiency
Less common causes
Acute myeloid leukemia
Sideroblastic anemia
Acute lymphoblastic leukemia
Hypersplenism
Myelodysplastic syndrome
Uncommon causes
Hereditary folate malabsorption
Pharmacological causes
Azathioprine
Capecitabine
Cycloserine
Fluorouracil
Hydroxyurea
Mercaptopurine
Methotrexate
Pyrimethamine
Thioguanine
Triamterene
Trimethoprim