Immunosuppressive Therapy Alone Versus Plus Oral Anticoagulation in the Treatment of VT Associated With Behcet's Disease

"Participants in this arm will receive placebo plus standard immunosuppressive therapy consisting of:~Azathioprine (2.5 mg/kg/day, maximum 200 mg/day, oral) Methylprednisolone (0.5 mg/kg/day, oral, tapered over 12 weeks according to protocol) This intervention represents the standard treatment for venous thrombosis associated with Behçet's Disease and serves as the control arm of the study."

"Participants in this arm will receive standard immunosuppressive therapy as described above, plus Rivaroxaban (20 mg/day, oral, for 12 months).~This intervention aims to evaluate whether the addition of oral anticoagulation (Rivaroxaban) to immunosuppressive therapy reduces the risk of thrombotic relapse and post-thrombotic syndrome compared to immunosuppressive therapy alone."