Concurrent occurrence of allergic granulomatous angiitis and temporal arteritis: a case report and review of the literature.

Allergic granulomatous angiitis (AGA) is a disease entity that was first distinguished from classical polyarteritis nodosa by Churg and Strauss in 1951, and is characterized by the clinical features of allergic rhinitis or bronchial asthma, eosinophilia, and vasculitis. Allergic granulomatous angiitis has been described to mainly involve small vessels. We herein describe a case of Churg-Strauss syndrome which demonstrated the clinical and laboratory findings supporting a diagnosis of AGA and was also associated with the clinical and pathological findings for temporal arteritis, which was characterized by eosinophil infiltration and granuloma formation of the temporal artery (middle-sized vessel).