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It passes behind the psoas major muscle, but in front of the lumbar vertebrae. [1] When the ascending lumbar vein crosses the subcostal vein, it becomes one of the following: the azygos vein (in the case of the right ascending lumbar vein). [1] [2] the hemiazygos vein (in the case of the left ascending lumbar vein). [1]
The 3rd and 4th lumbar veins drain into the inferior vena cava. [3]The fate of the two superior lumbar veins is far more variable, and may drain into either the inferior vena cava, ascending lumbar vein, azygos vein, or (on the left side) the left renal vein; the 1st lumbar vein often passes inferiorly to join the 2nd lumbar vein, but may less commonly drain into the ascending lumbar vein, or ...
While venous thrombosis of the legs is the most common form, venous thrombosis may occur in other veins. These may have particular specific risk factors: [5] Cerebral venous sinus thrombosis, cavernous sinus thrombosis and jugular vein thrombosis: thrombosis of the veins of the brain and head
A right-sided acute deep vein thrombosis (to the left in the image). The leg is swollen and red due to venous outflow obstruction. The most common conditions associated with thrombophilia are deep vein thrombosis (DVT) and pulmonary embolism (PE), which are referred to collectively as venous thromboembolism (VTE). DVT usually occurs in the legs ...
The hemiazygos vein and the accessory hemiazygos vein, when taken together, essentially serve as the left-sided equivalent of the azygos vein. [2] That is, the azygos vein serves to drain most of the posterior intercostal veins on the right side of the body, and the hemiazygos vein and the accessory hemiazygos vein drain most of the posterior intercostal veins on the left side of the body. [2]
deep venous thrombosis (needed) increased pain along vein with Valsalva; proximal pressure prevents this Lowenberg's sign: Robert I. Lowenberg: vascular medicine: deep vein thrombosis (needed) immediate pain on inflating blood pressure cuff around calf MacDonald triad: John M. MacDonald: psychiatry: sociopathic personality disorder
They drain (in craniocaudal sequence) into vertebral vein, intercostal veins, lumbar veins, and lateral sacral veins. Upper posterior intercostal veins may additionally drain via brachiocephalic vens. They may drain to ascending lumbar veins.
Symptoms experienced by an individual with a paradoxical embolism can be from both the original site of thrombus and the location of where the emboli lodges. It is believed that the most common origin site of thrombus is from a deep vein thrombosis (DVT), however, in most patients with suspected paradoxical embolism no evidence of a DVT is ...