Carbimazole induced eosinophilic granulomatous vasculitis localized to the stomach.

Vasculitis associated with anti-neutrophil cytoplasmic antibodies has been reported in patients treated with anti-thyroid drugs and especially propylthiouracil. We report here a case of granulomatous eosinophilic vasculitis mimicking gastric neoplasm and peripheral eosinophilia in a 27-year-old man who was treated with carbimazole for 5 months for Graves' disease. Clinical and morphologic features resolved within 2 months after stopping the drug, suggesting a causative role for the drug. To our knowledge, this is the first biopsy-proven granulomatous eosinophilic vasculitis associated with this drug.