WordNet

a missing piece (as a gap in a manuscript)

PrepTutorEJDIC

《文》すきま,割れ目 / 欠文,脱字 / 《文》(時間などの)中絶,とぎれ

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/06/24 14:18:56」(JST)

wiki en

[Wiki en表示]

The aortic hiatus is a hole in the diaphragm. It is the lowest and most posterior of the large apertures.

It is located approximately at the level of the twelfth thoracic vertebra (T12).

Structure

Strictly speaking, it is not an aperture in the diaphragm but an osseoaponeurotic opening between it and the vertebral column, and therefore behind the diaphragm (Meaning that diaphragmatic contractions do not directly influence the Aorta or aortic supply).

Occasionally some tendinous fibers prolonged across the bodies of the vertebræ from the medial parts of the inferior ends of the crura pass posterior to the aorta, and thus convert the hiatus into a fibrous ring.

The hiatus is situated slightly to the left of the mid line, and is bound anteriorly by the crura, and posteriorly by the body of the first lumbar vertebra.

Structures passing through

Through it passes the aorta, the azygos vein, the thoracic duct, and hemi-azygos vein passes through the right crus.

Additional images

The thoracic and right lymphatic ducts.

External links

Anatomy photo:40:08-0103 at the SUNY Downstate Medical Center - "Major Openings in the Diaphragm"
Anatomy image:8906 at the SUNY Downstate Medical Center
1422917689 at GPnotebook

This cardiovascular system article is a stub. You can help Wikipedia by expanding it.

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 腹部大動脈瘤の血管内修復 endovascular repair of abdominal aortic aneurysm
2. 胸部大動脈瘤の臨床症状および診断 clinical manifestations and diagnosis of thoracic aortic aneurysm
3. 成人における大動脈二尖弁の臨床症状および診断 clinical manifestations and diagnosis of bicuspid aortic valve in adults
4. 成人における大動脈二尖弁疾患のマネージメント management of adults with bicuspid aortic valve disease
5. 大動脈弁狭窄症における大動脈弁口面積 aortic valve area in aortic stenosis

English Journal

Cardiovascular CT in the diagnosis of pericardial constriction: Predictive value of inferior vena cava cross-sectional area.

Hanneman K1, Thavendiranathan P2, Nguyen ET1, Moshonov H1, Paul NS1, Wintersperger BJ1, Crean AM3.Author information 1Department of Medical Imaging, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada.2Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada.3Department of Medical Imaging, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada; Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada. Electronic address: andrew.crean@uhn.ca.AbstractBACKGROUND: The diagnosis of pericardial constriction remains challenging.
Journal of cardiovascular computed tomography.J Cardiovasc Comput Tomogr.2014 Mar-Apr;8(2):149-57. doi: 10.1016/j.jcct.2013.12.017. Epub 2014 Jan 11.
BACKGROUND: The diagnosis of pericardial constriction remains challenging.PURPOSE: We sought to evaluate the predictive value of cardiovascular CT-based measurements of inferior vena cava (IVC) parameters in the diagnosis of pericardial constriction.METHODS: Forty-two consecutive patients referred f
PMID 24661828

A semi-quantitative approach to variation of the azygos vein course.

Bales G.Author information Department of Anatomy, Western University of Health Sciences, Pomona, California.AbstractThe azygos vein (AV) is typically described (illustrated) as ascending vertically on the right of thoracic vertebrae. Most thoracic vein studies have focused on tributary patterns, but some have noted more leftward AV courses. This study statistically documents variation in AV course independent of tributary patterns. A more statistical approach to the probable position of AV at different vertical levels may aid clinicians in locating and assessing it in clinical contexts. The AV course was exposed in 84 cadavers by removing overlying viscera between the aortic hiatus and tracheal bifurcation. Subjectively, non-pathological specimens were digitally photographed in anterior view. For each photo, a scaled grid was used to mark the horizontal position of the AV center at each of five vertical levels. The summated numerical distributions showed the following: ∼5% of the AVs ascended on the right side (classical) position, ∼30% did not cross the midline, ∼70% included part or all of their course left of the midline, and ∼14% reached the extreme left side. Based on this data, the modal AV course (1) begins at, or to the right of, the midline, (2) deviates leftward, (3) crosses the midline below mid-level, (4) reaches a leftward maximum at about 3/5 of its course, (5) then deviates rightward (often only reaching the midline at the uppermost level). In several noticeable cases, the leftward maximum was associated with large connections to left-side veins, suggesting a possible tension mechanism exerting traction on the AV over time. Clin. Anat., 2014. © 2014 Wiley Periodicals, Inc.
Clinical anatomy (New York, N.Y.).Clin Anat.2014 Jan 17. doi: 10.1002/ca.22346. [Epub ahead of print]
The azygos vein (AV) is typically described (illustrated) as ascending vertically on the right of thoracic vertebrae. Most thoracic vein studies have focused on tributary patterns, but some have noted more leftward AV courses. This study statistically documents variation in AV course independent of
PMID 24442867

An unusual origin of the celiac trunk and the superior mesenteric artery in the thorax.

Matusz P1, Iacob N, Miclaus GD, Pureca A, Ples H, Loukas M, Tubbs RS.Author information 1Department of Anatomy, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania.AbstractThe authors report a case of a 44-year-old male found to have unusual origins of the celiac trunk (CT) and superior mesernteric artrery (SMA) as revealed by routine multidetector computed tomograph (MDCT) angiography. The CT and SMA originate from the thoracic aorta (TA) 21 mm and 9 mm above the aortic hiatus, respectively. The median arcuate ligament (MAL) is located at the level of the L1-L2 intervertebral disc. The course of the CT descends in the thoracic cavity making a 14° acute downward angle in front of the TA; below the level of the MAL, the CT descends, making an angle of 47°. The course of the SMA descends at both the thoracic and abdominal level making an angle of 17°, and having an aortomesenteric distance of 9 mm at the level of the third part of the duodenum. In the present case, the supradiaphragmatic origin of the CT and the SMA was determined by their incomplete caudal descent, associated with a pronounced apparent descent of the diaphragm. A thoracic origin of the CT and SMA and the acute downward aortomesenteric angle (17°) associated with a reduced aortomesenteric distance at the level of the third part of the duodenum (9 mm), although no clinical signs are present, may predispose the patient to develop simultaneously a triple syndrome: the compression of CT by MAL (celiac axis compression syndrome), the compression of SMA by MAL (superior mesenteric artery compression syndrome), and the compression of the duodenum by the SMA (superior mesenteric artery syndrome).
Clinical anatomy (New York, N.Y.).Clin Anat.2013 Nov;26(8):975-9. doi: 10.1002/ca.22293. Epub 2013 Sep 20.
The authors report a case of a 44-year-old male found to have unusual origins of the celiac trunk (CT) and superior mesernteric artrery (SMA) as revealed by routine multidetector computed tomograph (MDCT) angiography. The CT and SMA originate from the thoracic aorta (TA) 21 mm and 9 mm above the aor
PMID 24108529

Japanese Journal

動脈裂孔アプローチによる持続腹腔神経叢ブロック法

柳田国夫,伊藤樹史,内野博之 [他],星野伸二,室大輔
東京醫科大學雜誌 = THE JOURNAL OF TOKYO MEDICAL UNIVERSITY 65(4), 401-408, 2007-10-30
NAID 10019804567

Anatomical investigation of the esophageal and aortic hiatuses : Physiologic, clinical and surgical considerations

BARBOSA COSTA Milton Melciades,ARY PIRES-NETO Mario
Anatomical science international 79(1), 21-31, 2004-03-01
NAID 10014026227

解剖体および胃癌手術所見からみた大動脈裂孔周囲のリンパ経路と郭清意義について

山田和彦,大山繁和,太田惠一朗,松原敏樹,山口俊晴,武藤徹一郎
日本消化器外科学会雑誌 36(6), 443-450, 2003-06-01
NAID 110001294831

「大動脈裂孔」

Aortic hiatus
	The diaphragm. Under surface. (Aortic hiatus labeled near center.)
	Celiac and cranial mesenteric ganglion in a cat. 1 Crus sinistrum (Diaphragma), 2 hiatus aorticus, 3 Aorta, 4 Arteria lumbalis, 5 Nervus splanchnicus major, 6 Arteria coeliaca, 7 Arteria phrenica caudalis, 8 Ganglion coeliacum, 9 Plexus coeliacus, 10 Ganglion mesentericum craniale, 11 Plexus mesentericus cranialis, 12 Arteria mesenterica cranialis, 13 Nervus splanchnicus minor, 14 Adrenal gland, 15 Arteria abdominalis cranialis, 16 Stomach, 17 Liver (Lobus caudatus), 18 Kidney
Details
Identifiers
Latin	hiatus aorticus
Dorlands; /Elsevier	h_11/12421932
TA	A04.4.02.010
FMA	58288
	Anatomical terminology [edit on Wikidata]