Allergic granulomatosis and angiitis of Churg-Strauss. A case of high serum level of eosinophil cationic protein.

We report a case of allergic granulomatosis and angiitis of Churg-Strauss. The patient is a 40-year-old woman who satisfied the clinico-pathological triad of asthma, tissue and blood eosinophilia, and granulomatous vasculitis. We also measured serum eosinophil cationic protein (ECP) levels in this patient. In the active stage, the serum ECP level was higher than in healthy controls, declining in the remission stage, a finding suggesting that ECP is involved in the pathogenesis and course of Churg-Strauss disease.