Although thrombosis usually occurs in the leg, it may also appear in the arm, abdomen, brain or eye
Blood does not clot only in the deep veins of the legs. Thiscan also occur in the deep veins of the arms, in the veins of the abdomen and in the surface veins on arms or legs.
The most frequent place is a thrombosis of deep veins in the arms. The ratio is one case of DVT in an arm for every 30 cases of DVT in a leg, although DVT frequency in the arms has recently doubled due to an increasing use of intravenous catheters.
Thrombosis in the portal vein (carrying blood to the liver), of the mesenteric vein (collecting the blood from the intestine), of the splenetic vein (of the spleen) and of the renal vein is less common.
Sometimes these thromboses are diagnosed in patients who come to hospital suffering from abdominal pain, with nausea and vomiting or diarrhea. In other cases, these types of thromboses are casual findings in patients without symptoms.
Similarly, thrombosis on cerebral venous sinuses is rare. In these cases, the symptoms are similar to those caused by a thrombosis in brain arteries, or cerebral embolism. Headache, loss of strength and/or sensitivity in one side of the body, and some level of impaired consciousness are common symptoms.
All these types of thrombosis, such as the leg DVT and pulmonary embolisms are treated with anticoagulants
Retinal vein thrombosis is also rare. It usually presents as a sudden partial or total loss of vision in one eye.
Unlike the above, retinal venous thrombosis is not treated with anticoagulants
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