Angiolymphoid hyperplasia with eosinophilia presenting as a giant axillary artery aneurysm.

Angiolymphoid hyperplasia with eosinophilia (ALHE) is an unusual vascular tumor most frequently located in the superficial head and neck. Noncutaneous localization of this pathology in large arteries presenting as a pulsatile mass is extremely rare. We describe an adult male with a giant left axillary artery tumor secondary to ALHE. ALHE should be considered in the differential diagnosis of localized peripheral arterial masses, especially in young patients.