Renal vein

Renal vein
Renal vein
	The anterior surfaces of the kidneys, showing the areas of contact of neighboring viscera.
	1.Renal pyramid; 2.Interlobular artery; 3.Renal artery; 4. Renal vein; 5.Renal hilum; 6.Renal pelvis; 7.Ureter; 8.Minor calyx; 9.Renal capsule; 10.Inferior renal capsule; 11.Superior renal capsule; 12.Interlobar vein; 13.Nephron; 14.Renal sinus; 15.Major calyx; 16.Renal papilla; 17.Renal column;
Details
Drains from	Kidney
Source	Interlobar veins,leftovarian vein
Drains to	Inferior vena cava
Artery	Renal artery
Identifiers
Latin	venae renales
MeSH	D012082
TA98	A12.3.09.009
TA2	5000,5006
FMA	14334
	Anatomical terminology [edit on Wikidata]

Therenal veinsin therenal circulation,are large-calibre^[1]veinsthat drain blood filtered by thekidneysinto theinferior vena cava.There is one renal vein draining each kidney.^{[citation needed]}Each renal vein is formed by the convergence of theinterlobar veinsof one kidney.^[2]

Because the inferior vena cava is on the right half of the body, the left renal vein is longer than the right one.

Structure

One renal vein drains eachkidney.^{[citation needed]}A renal vein is situated anterior to its corresponding accompanyingrenal artery.The renal veins empty into theinferior vena cava,entering it at nearly a 90° angle.^[1]

Due to the right-ward displacement of the inferior vena cava from the midline, the left renal vein is some 3 times longer than the right one (~7.5 cm and ~2.5 cm, respectively).^[1]

The renal vein divides into 4 divisions upon entering the kidney:^{[contradictory]}^{[citation needed]}

the anterior branch which receives blood from the anterior portion of the kidney and,
the posterior branch which receives blood from the posterior portion.

Tributaries

Because the tributaries of theinferior vena cavaare not bilaterally symmetrical, the left renal vein often receives the ipsilateralinferior phrenic vein,suprarenal vein,gonadal vein(left testicular veinin males,left ovarian veinin females), and 2ndlumbar vein.^[3]This is in contrast to the right side of the body, where these veins drain directly into the IVC.^[3]

Relations

The anatomical relations of the two renal veins are bilaterally asymmetrical.

Left renal vein

The left renal vein is situated posterior to thesplenic vein,and thebody of the pancreas.^[1]It passes through the angle formed by the abdominal aorta (situated posteriorly), andsuperior mesenteric artery(situated anteriorly) (increased acuteness of this angle may lead to the left renal vein being "pinched" between the two arteries, with the resulting compression impairng blood flow through the vein, a condition known asnutcracker syndrome). Occasionally, the left renal vein (or accessory left renal vein) passes posterior to the aorta.^[1]

Right renal vein

The right renal vein is situated posterior to the descending part of theduodenum.^[1]

Variation

There is typically a single renal vein drainin each kidney, but accessory renal veins are commonly encountered; renal vasculature anomalies are more frequent withectopic kidneys,and almost always present withhorseshoe kidney).^[4]

In some individuals, the left renal vein passes posterior to the abdominal aorta instead of in anterior to it;^[1]this is termed a retro-aortic left renal vein (also known as "The Vein of Schnitker" ). If there is both a vein passing in front of and one behind the aorta this is called a circumaortic renal vein. In the case of a left sided IVC and the right renal vein passes behind the abdominal aorta, this is termed a retroaortic right renal vein, which is also known as “The Reverse Vein of Schnitker”.^{[citation needed]}

Clinical significance

Diseases associated with the renal vein includerenal vein thrombosis(RVT) andnutcracker syndrome(renal vein entrapment syndrome).^{[citation needed]}

Additional images

3D-renderedcomputed tomography,showing one renal vein (in red color) for each kidney
Frontal section through the kidney
Diagram showing completion of development of the parietal veins.
The venæ cavæ and azygos veins, with their tributaries.
Renal vein
Human kidneys viewed from behind with spine removed.
Kidney
Renal vein
Renal vein
Renal vein

References

^^a ^b ^c ^d ^e ^f ^gGray's anatomy: the anatomical basis of clinical practice.Susan Standring (Forty-second ed.). [New York]. 2021. p. 1144.ISBN 978-0-7020-7707-4.OCLC 1201341621.{{cite book}}:CS1 maint: location missing publisher (link) CS1 maint: others (link)
^Martini, Frederic; Tallitsch, Robert B.; Nath, Judi L. (2017).Human Anatomy(9th ed.). Pearson. p. 689.ISBN 9780134320762.
^^a ^bDissector Answers - Kidney & Retroperitoneum Archived2007-11-09 at theWayback Machine
^"Multiple renal veins".Medcyclopaedia.GE.Archived fromthe originalon 2012-02-05.

External links

Anatomy figure: 40:06-05at Human Anatomy Online, SUNY Downstate Medical Center - "Retroperitoneal structures on the posterior abdominal wall."

[:2-1] ^^a ^b ^c ^d ^e ^f ^gGray's anatomy: the anatomical basis of clinical practice.Susan Standring (Forty-second ed.). [New York]. 2021. p. 1144.ISBN 978-0-7020-7707-4.OCLC 1201341621.{{cite book}}:CS1 maint: location missing publisher (link) CS1 maint: others (link)

[2] Martini, Frederic; Tallitsch, Robert B.; Nath, Judi L. (2017).Human Anatomy(9th ed.). Pearson. p. 689.ISBN 9780134320762.

[:0-3] Dissector Answers - Kidney & Retroperitoneum Archived2007-11-09 at theWayback Machine

[4] "Multiple renal veins".Medcyclopaedia.GE.Archived fromthe originalon 2012-02-05.

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