c l i n i c a l f o l i o s : n a r r a t i v e





A D V E R T I S E M E N T

 

Azygous Continuation of the Inferior Vena Cava: 7

A D V E R T I S E M E N T

   

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The dynamics of the changes are shown in this series     

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Azygous Continuation of the Inferior Vena Cava: 8

A D V E R T I S E M E N T

   
 

The mature common central venous drainage pattern of the body is shown. The direct route of superior and inferior vena cavae draining head and extremities is supplemented by parallel channels of ascending lumbar (the right is hidden by the IVC) and azygous veins along the anterolateral vertebral bodies. The ascending lumbars pass through the roots of the diaphragmatic crura to join the azygous veins. The ascending lumbars and azygous receive body wall drainage from lumbars and intercostals and drain into the SVC after passing over the right pulmonary hilum (see the pulmonary hilum). In addition to inflow from the ascending lumbars, the azygous have central input from the IVC on the right and from the left renal. The lumbars connect with the iliacs below and the accessory hemi azygous connects with the left subclavian vein. The hemiazygous and accessory hemiazygous often have a common entry into the azygous.   

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Azygous Continuation of the Inferior Vena Cava: 9

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The first of two cases presented for repair of a known Bochdalek hernia. She had undergone vena caval filter placement and pulmonary embolectomy for recurrent pulmonary emboli in the past. Diagnosis of azygous continuation of the inferior vena cava was made at that time.      

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This page was last modified on 5/1/2007.