A Case of Systemic Lupus Erythematosus Manifested as Anemia and Thrombocytopenia during Antithyroid Drug Treatment

We encountered a patient with systemic lupus erythematosus that manifested as anemia and thrombocytopenia during antithyroid drug treatment. A 39-year-old woman with Graves’ disease was admitted with anemia and thrombocytopenia. She had been treated with propylthiouracil, but had switched to methimazole one month prior to admission. We evaluated many possible causes and found that the patient had renal disorder and hematologic disorder, and was positive for antiphospholipid and antinuclear antibodies. She was diagnosed with systemic lupus erythematosus associated with Graves’ disease and was successfully treated with corticosteroids. (Korean J Med 2012;82:232-235)

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