alt=Drawing showing that moving down the body, the inferior vena cava branches into 2 common iliac veins. The common iliac veins split into the internal iliac and external iliac veins. The external iliac veins give rise to the common femoral veins.<unk>  and PE are the two manifestations of the cardiovascular disease venous thromboembolism (VTE). VTE can occur as<unk>  only,<unk>  with PE, or PE only. About two-thirds of VTE manifests as<unk>  only, with one-third manifesting as PE with or without<unk> . VTE, along with superficial vein thrombosis, are common types of venous thrombosis.<unk>  is classified as acute when the clots are developing or have recently developed, whereas chronic<unk>  persists more than 28 days. Differences between these two types of<unk>  can be seen with ultrasound. An episode of VTE after an initial one is classified as recurrent. Bilateral<unk>  refers to clots in both limbs while unilateral means only a single limb is affected.<unk>  in the legs is proximal when above the knee and distal (or calf) when below the knee.<unk>  below the popliteal vein, a proximal vein behind the knee, is classified as distal and has limited clinical significance compared to proximal<unk> . Calf<unk>  makes up about half of<unk> s. Iliofemoral<unk>  has been described as involving either the iliac or common femoral vein; elsewhere, it has been defined as involving at a minimum the common iliac vein, which is near the top of the pelvis.<unk>  can be classified into provoked and unprovoked categories. For example,<unk>  that occurs in association with cancer or surgery can be classified as provoked. However, the European Society of Cardiology in 2019 urged for this dichotomy to be abandoned to encourage more personalized risk assessments for recurrent VTE. The distinction between these categories is not always clear.
Deep vein thrombosis
Hematoma
Varicose veins
Cellulitis
Superficial vein thrombosis
Lymphedema
Venous thrombosis
Baker's cyst