The comparative prospective study was carried out to compare the result of ligation of Azygos
vein with that of preservation of the vein with anastomosis lateral and medial to vein in three comparable groups in terms of operating time, post-operative pneumonia, post-operative leak and mortality.
Ten percent were located in the right A2 segment, 30 % in the left A2, 20 % at the junction of the A1 with the AComA (significantly associated with an absence of the right A1, p = 0.008), 10 % were in the azygos
artery and 30 % in the AComA (one associated with the absence of right A1 , p = 0.008, one with the absence of a left A1, p = 0.853, and the last with hypoplasia of the right A2, p = 0.156).
Gooding, "The clinical significance of the azygos
anterior cerebral artery (A.C.A.)," The American journal of roentgenology, radium therapy, and nuclear medicine, vol.
A contrast CT scan confirmed a slowly enhancing mass in the pathway of the azygos
venous arch (Figure 1).
proposed an even wider evaluation of the venous system, encompassing not only intra- and extracranial venous drainage systems but also an assessment of venous anatomy and flow in the azygos
Contrast abdominopelvic CT showed an old complete thrombosis of the left common iliac vein, recent complete thromboses of the left venous junctions (external and internal iliac veins, common femoral deep and superficial veins, ascending lumbar vein and various presacral collaterals), dilated azygos
vein, partial eccentric thrombosis of the IVC, approximately 18 mm lower than the flow level of the right renal vein, with a 5mm clot on a length of 27mm, with a reduced caliber on almost its entire length from the origin to the level of the caudate lobe.
Collotypes were obtained from the Venetian copy of the Tabula and, for completeness, a reproduction of the azygos
venous system woodcut in the Venesection Letter of 1539.
In addition to the visualized tissues in this study, at least not precisely, it's possible to observe the right costocervical vein, the right azygos
vein and the frenic nerve (PIGATTO et al., 2008).
(1) Cannulation of the accessory hemiazygos vein is rare but can happen when the accessory hemiazygos vein drains into the left brachiocephalic vein instead of the azygos
In those cases, anterior boundary of CW was formed by azygos
ACA instead of ACoA (Figure 3).
Injuries to the supraaortic and pulmonary arteries and large venous vessels (vena cava, azygos
) may be associated with cardiac tamponade or hypovolemic shock from massive hemorrhage .
The contents of this space may be subjected to the various pathologic processes, including lipoma, lymphangioma, vascular abnormalities like aortic aneurysm, hematoma, azygos
and hemiazygos continuation of the inferior vena cava, and abscesses.