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Splenic artery

Artery which supplies blood to the spleen From Wikipedia, the free encyclopedia

Splenic artery
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In human anatomy, the splenic artery or lienal artery, an older term, is the blood vessel that supplies oxygenated blood to the spleen. It branches from the celiac artery, and follows a course superior to the pancreas. It is known for its tortuous path to the spleen.

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Structure

The splenic artery, the largest branch of the celiac trunk, gives off branches to the stomach and pancreas before reaching the spleen.

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Note that the branches of the splenic artery do not reach all the way to the lower part of the greater curvature of the stomach. Instead, that region is supplied by the right gastroepiploic artery, a branch of the gastroduodenal artery. The two gastroepiploic arteries anastomose with each other at that point.

Relations

The splenic artery passes between the layers of the lienorenal ligament. Along its course, it is accompanied by a similarly named vein, the splenic vein, which drains into the hepatic portal vein.

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Clinical significance

Free fluid seen on ultrasound from a ruptured splenic artery aneurysm[1]

Splenic artery aneurysms are rare, but still the third most common abdominal aneurysm, after aneurysms of the abdominal aorta and iliac arteries. They may occur in pregnant women in the third trimester and rupture carries a maternal mortality of greater than 50% and a fetal mortality of 70 to 90%. Risk factors include smoking and hypertension. For the treatment of patients who represent a high surgical risk, percutaneous endovascular treatment may be considered.

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References

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