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A positive Pemberton's sign is indicative of superior vena cava syndrome (SVC), commonly the result of a mass in the mediastinum.Although the sign is most commonly described in patients with substernal goiters where the goiter "corks off" the thoracic inlet, [4] the maneuver is potentially useful in any patient with adenopathy, tumor, or fibrosis involving the mediastinum.
Superior vena cava syndrome (SVCS), is a group of symptoms caused by obstruction of the superior vena cava ("SVC"), a short, wide vessel carrying circulating blood into the heart. The majority of cases are caused by malignant tumors within the mediastinum , most commonly lung cancer and non-Hodgkin's lymphoma , directly compressing or invading ...
The superior vena cava (SVC) is the superior of the two venae cavae, the great venous trunks that return deoxygenated blood from the systemic circulation to the right atrium of the heart. It is a large-diameter (24 mm) short length vein that receives venous return from the upper half of the body, above the diaphragm .
The left superior vena cava is not shown in this image. In anatomy , a persistent left superior vena cava is the most common variation of the thoracic venous system . [ 1 ] [ 2 ] It is present in between 0.3% and 0.5% of the population, [ 3 ] [ 4 ] [ 5 ] and is an embryologic remnant that results from a failure to involute .
Superior vena cava syndrome is a rare complication of arm DVT. [11] DVT is thought to be able to cause a stroke in the presence of a heart defect. This is called a paradoxical embolism because the clot abnormally travels from the pulmonary circuit to the systemic circuit while inside the heart.
[7] Intravascular stents are a treatment method for Congenital Stenosis of the Vena Cava. [8] Expandable metallic stents have been used as part of a procedure to dilate and maintain stenotic vena cava. [8] Experiments carried out on mongrel dogs resulted in some failures for dilation and early migration, and occlusion complications in patients.
3. Keebler Fudge Magic Middles. Neither the chocolate fudge cream inside a shortbread cookie nor versions with peanut butter or chocolate chip crusts survived.
It is also part of the surgical treatment path for hypoplastic left heart syndrome and hypoplastic right heart syndrome. [1] [2] [3] This procedure has been largely replaced by Bidirectional Glenn procedure. [citation needed] It connects the superior vena cava to the right pulmonary artery. [4