About 1.5 out of 1000 adults a year have a first VTE in high-income countries. The condition becomes much more common with age. VTE rarely occurs in children, but when it does, it predominantly affects hospitalized children. Children in North America and the Netherlands have VTE rates that range from 0.07 to 0.49 out of 10,000 children annually. Meanwhile, almost 1% of those aged 85 and above experience VTE each year. About 60% of all VTEs occur in those 70 years of age or older. Incidence is about 18% higher in males than in females, though there are ages when VTE is more prevalent in women. VTE occurs in association with hospitalization or nursing home residence about 60% of the time, active cancer about 20% of the time, and a central venous catheter or transvenous pacemaker about 9% of the time. During pregnancy and after childbirth, acute VTE occurs in about 1.2 of 1000 deliveries. Despite it being relatively rare, it is a leading cause of maternal morbidity and mortality. After surgery with preventive treatment, VTE develops in about 10 of 1000 people after total or partial knee replacement, and in about 5 of 1000 after total or partial hip replacement. About 400,000 Americans develop an initial VTE each year, with 100,000 deaths or more attributable to PE. Asian, Asian-American, Native American, and Hispanic individuals have a lower VTE risk than Whites or Blacks. Populations in Asia have VTE rates at 15 to 20% of what is seen in Western countries, with an increase in incidence seen over time. In North American and European populations, around 4–8% of people have a thrombophilia, most commonly factor V leiden and prothrombin G20210A. For populations in China, Japan, and Thailand, deficiences in protein S, protein C, and antithrombin predominate. Non-O blood type is present in around 50% of the general population and varies with ethnicity, and it is present in about 70% of those with VTE.<unk>  occurs in the upper extremities in about 4–10% of cases, with an incidence of 0.4–1.0 people out of 10,000 a year. A minority of upper extremity<unk> s are due to Paget–Schroetter syndrome, also called effort<unk> , which occurs in 1–2 people out of 100,000 a year, usually in athletic males around 30 years of age or in those who do significant amounts of overhead manual labor.
Deep vein thrombosis
Hematoma
Varicose veins
Cellulitis
Superficial vein thrombosis
Lymphedema
Venous thrombosis
Baker's cyst