Patients with chronic inflammatory bowel disease (IBD) represented by Crohn disease (CD) and ulcerative colitis (UC) are at higher risk for thromboembolic complications (CTE) which are a major cause of morbidity. They are attributed to a pre-thrombotic state induced by the inflammatory activity of this disease. The thrombotic risk inpatients with IBD is underestimated and thromboprophylaxisis not widely implemented in the clinical practice. Many studies on thromboembolism in the IBD populationhave already been carried out, however the precisepathogenesis is still poorly understood. The aim of our study is to determine the prevalence, risk factors and clinical aspects of thrombosis during IBD.