Thrombosis

Thrombosis occurs when a vein becomes blocked (shown in light red), preventing proper blood flow from the limb. This can also damage the vein valves, leading to long-term complications.

Thrombosis involves the obstruction of a venous blood vessel by a blood clot, leading to impaired blood drainage in the affected body region. This results in pain, swelling, and changes in skin circulation. Pain and swelling in the extremities are therefore considered the primary symptoms of venous thrombosis. Thrombosis and the associated pulmonary embolism are among the most common and acutely life-threatening cardiovascular conditions. Diagnosis is primarily conducted using ultrasound—specifically, color-coded duplex sonography. In certain cases, advanced imaging modalities like MRI or CT may be necessary.

Thrombosis occurs when a vein becomes blocked (shown in light red), preventing proper blood flow from the limb. This can also damage the vein valves, leading to long-term complications.

Treatment primarily involves prescribing blood thinners, typically taken once or twice daily. In specific cases, such as pelvic vein thrombosis, thrombolysis (dissolving the clot) or even the placement of a metal stent may be considered. Therefore, precise anatomical assessment and individualized therapy planning are crucial in cases of venous thrombosis.

Following venous thrombosis, complications known as post-thrombotic syndrome can develop. This occurs in up to half of thrombosis cases and depends, among other factors, on the extent of the initial thrombosis. Symptoms include pain, swelling, and, over time, skin changes, which can eventually lead to venous leg ulcers ("ulcus cruris venosum"). Early diagnosis, treatment, and prevention are particularly important in post-thrombotic syndrome, with compression therapy playing a key role.