Formation of the Azygos Vein Formaci車n de la Vena 芍cigos

作者：Elton Correia Alves; Wellington Rodrigues Porciuncula Junior; Rodrigo Freitas Monte Bispo; Celio Fernando de Sousa Rodrigues

来源：International Journal of Morphology, 2011.

• Vena acigos
• Vena cava inferior
• Anatomia
• Azygos vein
• Inferior vena cava inferior
• Anatomy

The aim of the present study was to determine the most common origin of the azygos vein. Thirty cadavers male and female, white and non-white adult individuals of different ages fixed in 10% formaldehyde and dissected. All cadavers had an undisclosed clinical death and were donated to the Universidade Estadual de Ci那ncias da Sa迆de de Alagoa s, Brazil. Eleven different formations were found. The right subcostal vein was was only observed in 13 cases (43.33%); the azygos vein was formed by the confluence of the right subcostal and right ascending lumbar vein in three cases (10%); by the right subcostal vein with a contribution from the inferior vena cava (IVC) in three cases (10%); by the right subcostal with contribution from IVC and right ascending lumbar vein in three cases (10%); by the right and left subcostal veins in two cases (6.66%); by the right and left subcostal veins and contribution from the IVC in one case (3.33%); by the right and left subcostal veins and left accessory renal vein in one case (3.33%); by the left renal vein in one case (3.33%); by the right subcostal and left gonadal veins with contribution from the IVC in one case (3.33%); by the right subcostal and left renal veins in one case (3.33%); and composed by the continuation of the 11th posterior intercostal vein in one case (3.33%). Based on the results, the right subcostal vein was the only structure with a significant presence in the formation of the azygos vein. El objetivo del estudio fue verificar cual es la disposici車n m芍s frecuente del origen de la vena 芍cigos. Fueron disecados 30 cad芍veres de individuos adultos, de ambos sexos, de diferentes grupos 谷tnicos, fijados en formaldeh赤do al 10%, donados a la Universidade Estadual de Ciencias da Sa迆de de Alagoas. Se encontraron 11 formaciones diferentes. En 13 casos (43,33%) se observ車 s車lo la vena subcostal derecha; en 3 casos (10%) la vena 芍cigos estaba formada por la confluencia de las venas subcostal derecha y lumbar ascendente derecha; en 3 casos (10%) formado por las venas subcostal derecha y una contribuci車n de la vena cava inferior VCI; en 3 casos (10%) por las venas subcostal derecha y contribuci車n de la VCI y lumbar ascendente derecha; 2 casos (6,66%) por las venas subcostales derecha e izquierda; en 1 caso (3,33%) por las venas subcostal derecha, izquierda y contribuci車n de la VCI; en 1 caso (3,33%) por las venas subcostal derecha e izquierda y renal accesoria izquierda; en 1 caso (3,33%) por la vena renal izquierda; en1 caso (3,33%) por las venas subcostal derecha, gonadal izquierda y contribuci車n de la VCI; en 1 c