Coexisting Behçet's disease and ankylosing spondylitis presented with deep venous thrombosis: a case report and review of the literature.

The coexistence of Behçet's disease (BD) and ankylosing spondylitis (AS) is a rare combination and described only in case reports in the literature. Although the number of reports is increasing, vascular thrombosis, which is characteristic feature of BD, was not reported in this combination until now. We present a case of a male patient with both BD and AS, presenting with deep venous thrombosis. We also reviewed the clinical features of the cases with coexistence of BD and AS.