hemiazygos vein

WordNet

1. a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein (同)accessory hemiazygous vein, vena hemiazygos accessoria
2. make a veinlike pattern
3. any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ (同)nervure
4. one of the horny ribs that stiffen and support the wing of an insect (同)nervure
5. a layer of ore between layers of rock (同)mineral vein
6. a blood vessel that carries blood from the capillaries toward the heart; "all veins except the pulmonary vein carry unaerated blood" (同)vena, venous blood vessel
7. a distinctive style or manner; "he continued in this vein for several minutes"
8. having or showing markings that resemble veins (同)venose, veinlike

PrepTutorEJDIC

1. 〈C〉『静脈』 / 〈C〉(植物の)葉脈;(昆虫の)翅脈;(石の)石理;(木の)木目 / 〈C〉岩脈,鉱脈 / 〈U〉《しばしば a vein》(…の)傾向,性質《+of+名》 / 〈U〉《the vein》(…に対する)気分,気持ち《+for+名(doing)》
2. しも(筋)のある,筋のついた
3. (葉・昆虫の羽などの)脈模様,すじ

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/06/07 19:55:04」(JST)

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[Wiki en表示]

Vein: Hemiazygos vein
Diagram showing completion of development of the parietal veins. (Hemiazygos vein visible at center-left.)
The venæ cavæ and azygos veins, with their tributaries.
Latin	vena hemiazygos
Gray's	p.667
Drains to	azygos vein
Precursor	Left supracardinal vein

The hemiazygos vein (vena azygos minor inferior) is a vein running superiorly in the lower thoracic region, just to the left side of the vertebral column.

Structure

The hemiazygos vein and the accessory hemiazygos vein, when taken together, essentially serve as the left-sided equivalent of the azygos vein. That is, the azygos vein serves to drain most of the posterior intercostal veins on the right side of the body, and the hemiazygos vein and the accessory hemiazygos vein drain most of the posterior intercostal veins on the left side of the body. Specifically, the hemiazygos vein mirrors the bottom part of the azygos vein.

The structure of the hemiazygos vein is often variable. It usually begins in the left ascending lumbar vein or renal vein, and passes upward through the left crus of the diaphragm to enter the thorax. It continues ascending on the left side of the vertebral column, and around the level of the ninth thoracic vertebra, it passes rightward across the column, behind the aorta, esophagus, and thoracic duct, to end in the azygos vein.

The hemiazygos may or may not be continuous superiorly with the accessory hemiazygos vein.

It receives the 9th, 10th, and 11th posterior intercostal veins and the subcostal vein of the left side, and some esophageal and mediastinal veins.

Etymology

The name for this vein is derived from that of the azygos vein. Azygos means 'unpaired', and hemi means half. This vein mirrors the bottom half the azygos vein.

References

External links

• thoraxlesson5 at The Anatomy Lesson by Wesley Norman (Georgetown University) (postmediastinumlevel5)
• Anatomy photo:21:12-0200 at the SUNY Downstate Medical Center - "Mediastinum: The Azygos Vein and Posterior Intercostal Veins"
• figures/chapter_24/24-2.HTM - Basic Human Anatomy at Dartmouth Medical School

This article incorporates text from a public domain edition of Gray's Anatomy.

UpToDate Contents

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• 1. 術前門脈塞栓術 preoperative portal vein embolization
• 2. 成人における門脈血栓症の疫学および病因 epidemiology and pathogenesis of portal vein thrombosis in adults
• 3. 成人における慢性門脈血栓症：臨床症状、診断、および管理 chronic portal vein thrombosis in adults clinical manifestations diagnosis and management
• 4. 下肢静脈アブレーションのための開放手術法 open surgical techniques for lower extremity vein ablation
• 5. ネフローゼ症候群における腎静脈血栓症および凝固能亢進状態 renal vein thrombosis and hypercoagulable state in nephrotic syndrome

English Journal

• Hepatic vein redirection to improve pulmonary arteriovenous malformations after Fontan completion in patients with absence of inferior vena cava and hemiazygos continuation.

• Kugo Y, Iwai S, Yamauchi S, Hasegawa M, Kawata H.
• Journal of cardiac surgery. 2019 Mar;34(3)139-142.
• Pulmonary arteriovenous malformation is an important complication after Fontan completion in patients with univentricular circulation. Lack of hepatic venous flow in a pulmonary artery has been identified as a cause of pulmonary arteriovenous malformation. We report our experience with a case of red
• PMID 30702184

• A rare variation of the hemiazygos vein draining into the persistent left superior vena cava.

• Liu F, Ruze A, Amuti S, Wang S, Chen S, Yiming A, Xiong K.
• Anatomical science international. 2019 Feb;().
• During an educational dissection of a 72-year-old Chinese male cadaver, the hemiazygos vein (HAV) coursing the left side that drains into the persistent left superior vena cava was observed. The HAV was formed at the junction of the 9th to 11th right posterior intercostal veins, right subcostal vein
• PMID 30778907

• Venous stent patency may be affected by collateral vein lumen size.

• van Vuuren TM, Doganci S, Toonder IM, Graaf R, Wittens CH.
• Phlebology. 2019 Feb;34(1)32-39.
• Deep venous thrombosis causes blood flow deviation. It is hypothesized that with stent placement, developed collateral veins become redundant. This article evaluates the relation between the surface area of the collaterals and stent patency. The azygos and hemiazygos veins were identified and the la
• PMID 29514565

Japanese Journal

• 下大静脈閉塞を伴った多包性肝エキノコックス症の1例

• 日臨外会誌 76(5), 1124-1129, 2015
• NAID 130005110800

• The impact of aging on the course of the azygos vein

• Okajimas Folia Anat. Jpn. 92(1), 7-10, 2015
• NAID 130005102609

• 横隔神経麻痺を合併した機能的単心室の肺循環動態：横隔膜縫縮術およびFontan型手術前後で左右の肺循環評価を行った1例

• 日小児循環器会誌 30(1), 79-84, 2014
• NAID 130003398243

Related Links

• Hemiazygos vein - definition of hemiazygos vein by The Free ...

vein (vān) n. 1. a. Anatomy Any of the membranous tubes that form a branching system and carry blood to the heart from the cells, tissues, and organs of the body. b. A blood vessel of any kind; a vein or artery: felt the blood ...

• Hemiazygos vein, accessory | definition of hemiazygos vein ...

vein [vān] a vessel through which blood passes from various organs or parts back to the heart, in the systemic circulation carrying blood that has given up most of its oxygen. Veins, like arteries, have three coats: an inner coat (tunica ...

Related Pictures

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★リンクテーブル★

リンク元	「門脈」
関連記事	「vein」

「門脈」

　　[★]

英

portal vein PV

ラ

vena portae hepatis, vena portae

• KH. 149,153,164

門脈の側副路

-門脈＆側副路
KH. 154
-門脈系の側副循環路
KH. 249
-門脈の側副路(門脈大静脈吻合)
N.302

• 側副路

1. 1. 食道　：left gastric vein - esophageal venous plexus - azygos vein, hemiazygos vein
   2. 臍傍　：paraumbilical vein - superior epigastric vein, inferior epigastric vein
   3. 直腸　：superior rectal vein - middle rectal vein, inferior rectal vein
   4. 腹膜後：colic vein, splenic vein - renal vein, veins of the posterior body wall

Henry Gray (1825-1861). Anatomy of the Human Body. 1918.

臨床関連

• 門脈閉塞

「vein」

　　[★] 静脈