Abstract: Introduction: Large vessel involvement is one of the hallmarks of Behcet's disease (BD). Like the other manifestations of the disease, its prevalence differs due to ethnic variation and environmental factors. The aim of this study is to find the characteristics of vasculo Behcet in Iran. Materials & Methods: In a cohort of 4429 patients with BD, those with vascular involvement were selected (VB). Different manifestations of the disease were compared with ...