Vasculitis, pulmonary cavitation, and anemia during antithyroid drug therapy.

Two thyrotoxic girls, aged 12 and 16 years, had a clinical picture consisting of purpuric skin rash, nephritis, pulmonary cavitation, hemoptysis, and profound anemia during antithyroid drug therapy. These major toxic manifestations prompted discontinuation of antithyroid drugs and institution of antibiotic and glucocorticoid therapy before the resolution of the severe illness. The girls eventually required ablative doses of radioactive iodine, and one of them had a thyroidectomy for the treatment of thyrotoxicosis. The skin biopsy specimen in one patient was indicative of mononuclear cell cutaneous vasculitis. After recovery, the patients had no evidence Of persistent anemia, nephritis, or pulmonary parenchymal disease.