A Case of Antithyroid Drug-Induced Agranulocytosis Treated with Granulocyte Colony-Stimulating Factor (G-CSF) and Methylprednisolone / 대한소아내분비학회지

Although rare, agranulocytosis is the most serious, potentially fatal side effect of antithyroid drug. We experienced a 13-year-old girl who developed methimazole-induced agranulocytosis at 1 month after the initiation of treatment. Her granulocyte count recovered after discontinuation of methimazole and treatment with broad spectrum-antibiotics, G-CSF, and methylprednisolone. After recovery from agranulocytosis she was treated with radioiodine ablation therapy. Early detection and proper management of antithyroid drug-induced agranulocytosis is very important.