Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 42 3 2004 06 15 158 162 F. Shahram A. Nadji AR. Jamshidi F. Davatchi 2015 09 28 Large vessel involvement is one of the hallmarks of Behcet’s disease (BD) but its prevalence varies widely due to ethnic variation or environmental factors. The aim of this study is to find the characteristics of vasculo-Behcet (VB) in Iran. In a cohort of 4769 patients with BD, those with vascular involvement were selected. Different manifestations of disease were compared with the remaining group of patients. A confidence interval at 95% (CI) was calculated for each item. Vascular involvement was seen in 409 cases (8.6%; CI, 0.8). Venous involvement was seen in 396 cases, deep vein thrombosis in 294 (6.2%; CI, 0.7), superficial phlebitis in 108 (2.3%; CI, 0.4) and large vein thrombosis in 45 (0.9%; CI, 0.3). Arterial involvement was seen in 28 patients (25 aneurysms and 4 thromboses). Thirteen patients showed both arterial and venous involvement. The mean age of the patients with VB was slightly higher (P https://acta.tums.ac.ir/index.php/acta/article/view/2711 https://acta.tums.ac.ir/index.php/acta/article/download/2711/2693