azygos


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Related to azygos: azygos fissure, azygos lobe

azygos

 [az´ĭ-gos]
any unpaired part, as the azygos vein.
azygos vein a vein beginning in the abdomen as a continuation of the ascending lumbar vein; it and its tributaries serve as vessels for the return of blood from the thorax to the superior vena cava. The azygos vein also serves as a connecting link, through the ascending lumbar vein, between the venae cavae returning blood from above and below the heart. See anatomic Table of Veins in the Appendices.

az·y·gos

(az'ī-gos),
1. An unpaired (azygous) anatomic structure.
2. Synonym(s): azygos vein
[G. a- priv. + zygon, a yoke]

azygos

(ā-zī′gəs) Anatomy
adj. also azygous (-gəs)
Not one of a pair, as a vein or muscle; occurring singly.
n.
An unpaired anatomical structure.

az·y·gos

(az'i-gŏs)
1. An unpaired (azygous) anatomic structure.
2. Synonym(s): azygos vein.
[G. a- priv. + zygon, a yoke]
References in periodicals archive ?
The presence of the azygos artery or a fenestration variant of the anterior cerebral artery or anterior communicating artery have been associated with the presence of aneurysms due to the turbulent flow created by defects in the tunica media in the proximal and distal region of the fenestrated segment (Boleaga-Duran et al.; Dimmick & Faulder).
Lawton, "Nonsaccular aneurysms of the azygos anterior cerebral artery," Neurosurgical Focus, vol.
Hemangioma of the azygos venous arch is an extremely rare incident [1].
The supercardinal system forms the azygos and hemiazygos veins.
Hironaka, "Giant aneurysm of the azygos anterior cerebral artery," Neurologia Medico-Chirurgica, vol.
Other findings include reflux of contrast material into the azygos vein and inferior vena cava, deformation and compression of cardiac chambers and other intrapericardial structures, and bulging of the interventricular septum [34].
Title: Vena Cava, Abnormalities, Azygos Vein, Congenital.
The Stanford classification divides stenoses into four types, with type III being complete obstruction with reverse circulation in the azygos vein.
However, magnetic resonance angiography (MRA) showed that the internal carotid arteries did not follow a typical cavernous course, but rather they ascended to the midline at the level of a hypoplastic sella turcica, where they fused with a short-segment azygos anterior cerebral trunk (figure 3).
In the thoracic region, the supracardinal veins give rise to the azygos and hemiazygos veins.
The most common and characteristic inferior vena cava (IVC) anomaly is interruption of the infrahepatic portion of the IVC with azygos continuation (Figure 9).