Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance

The azygos venous system is highly variable in terms of its origin, course, communications, tributaries and termination of the associated veins: this study aimed to classify these anatomical variations. Thirty Thiel-embalmed cadavers aged 4898 years (18 female, 12 male) were examined. The vertebral...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dahran,Naief, Soames,Roger
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2016
Materias:	Azygos Hemiazygos Retroaortic communications Thiel-embalmed cadavers Variations
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300051
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-95022016000300051
record_format	dspace
spelling	oai:scielo:S0717-950220160003000512016-11-17Anatomical Variations of the Azygos Venous System: Classification and Clinical RelevanceDahran,NaiefSoames,Roger Azygos Hemiazygos Retroaortic communications Thiel-embalmed cadavers Variations The azygos venous system is highly variable in terms of its origin, course, communications, tributaries and termination of the associated veins: this study aimed to classify these anatomical variations. Thirty Thiel-embalmed cadavers aged 4898 years (18 female, 12 male) were examined. The vertebral level of termination and diameter of the azygos, hemiazygos, accessory hemiazygos and the left superior intercostal veins were determined, as well as the termination level of the right superior intercostal vein. The azygos system was classified into 3 types; primitive (type 1), transitional (type 2) and unicolumnar (type 3). Type 2 was further divided into 5 subgroups (A to E) according to the number of retroaortic communications. Type one was observed in 3 % (n=1), type 2 in 87 % (n=26) and type 3 in 10 % (n=3) of specimens. The vertebral level of termination of the azygos, hemiazygos, accessory hemiazygos, right superior intercostal and left superior intercostal veins were between T2 and T3, T6 and T10, T5 and T9, T2 and T4, and T2 and T4 respectively. Identification and understanding these variations are important during preoperative radiological investigations and surgical procedures, especially spinal surgery between T7 and T12 using a left thoracotomy approach, to avoid injuries which may lead to postoperative hematomas.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.34 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300051en10.4067/S0717-95022016000300051
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Azygos Hemiazygos Retroaortic communications Thiel-embalmed cadavers Variations
spellingShingle	Azygos Hemiazygos Retroaortic communications Thiel-embalmed cadavers Variations Dahran,Naief Soames,Roger Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
description	The azygos venous system is highly variable in terms of its origin, course, communications, tributaries and termination of the associated veins: this study aimed to classify these anatomical variations. Thirty Thiel-embalmed cadavers aged 4898 years (18 female, 12 male) were examined. The vertebral level of termination and diameter of the azygos, hemiazygos, accessory hemiazygos and the left superior intercostal veins were determined, as well as the termination level of the right superior intercostal vein. The azygos system was classified into 3 types; primitive (type 1), transitional (type 2) and unicolumnar (type 3). Type 2 was further divided into 5 subgroups (A to E) according to the number of retroaortic communications. Type one was observed in 3 % (n=1), type 2 in 87 % (n=26) and type 3 in 10 % (n=3) of specimens. The vertebral level of termination of the azygos, hemiazygos, accessory hemiazygos, right superior intercostal and left superior intercostal veins were between T2 and T3, T6 and T10, T5 and T9, T2 and T4, and T2 and T4 respectively. Identification and understanding these variations are important during preoperative radiological investigations and surgical procedures, especially spinal surgery between T7 and T12 using a left thoracotomy approach, to avoid injuries which may lead to postoperative hematomas.
author	Dahran,Naief Soames,Roger
author_facet	Dahran,Naief Soames,Roger
author_sort	Dahran,Naief
title	Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
title_short	Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
title_full	Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
title_fullStr	Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
title_full_unstemmed	Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance
title_sort	anatomical variations of the azygos venous system: classification and clinical relevance
publisher	Sociedad Chilena de Anatomía
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300051
work_keys_str_mv	AT dahrannaief anatomicalvariationsoftheazygosvenoussystemclassificationandclinicalrelevance AT soamesroger anatomicalvariationsoftheazygosvenoussystemclassificationandclinicalrelevance
_version_	1718444975684845568

Anatomical Variations of the Azygos Venous System: Classification and Clinical Relevance

Ejemplares similares