The European Venous Registry (EVeR) is an international repository of data on the treatments and outcomes of people with deep venous disease. The registry is designed to evaluate the outcomes of venous interventions over a ten-year period, with the ultimate goal to inform clinical decision making through the delivery of scientific evidence.

Inclusion Criteria:

• Patients with an imaging-confirmed new diagnosis of acute or chronic lower limb deep venous disease involving the iliac and/or common femoral veins, with or without extension to the inferior vena cava, or patients with an imaging-confirmed new diagnosis involving the IVC only.
• Consent to enter registry.

Exclusion Criteria:

• Unable to consent to enter into registry.
• Isolated upper limb DVT.
• Central venous thrombosis (e.g. superior vena cava obstruction).
• Isolated deep vein thrombosis below the common femoral vein.
• Isolated superficial venous thrombosis.
• Isolated superficial venous thrombophlebitis.
• Isolated varicose veins.
• Aged <18 years.

The population sampled for data collection includes all patients suffering from deep venous disease of the lower limbs who are treated in the centres joining the registry. These include patients receiving surgery as well as those not receiving surgery. Only prospective patients will be allowed.