Superior mesenteric lymph nodes
Lymph nodes of the large intestine and lower abdomen (superior mesenteric is #1)
Details
System	Lymphatic system
Drains to	Preaortic lymph node
Identifiers
Latin	nodi lymphoidei mesenterici superiores
Anatomical terminology [edit on Wikidata]

Thesuperior mesenteric lymph nodes may be divided into three principal groups:

• mesenteric lymph nodes
• ileocolic lymph nodes
• mesocolic lymph nodes

Themesenteric lymph nodes ormesenteric glands are one of the three principal groups of superior mesenteric lymph nodes and lie between the layers of themesentery.

They number from one hundred to one hundred and fifty, and are sited as two main groups:

• oneileocolic group lying close to the wall of thesmall intestine, among the terminal twigs of thesuperior mesenteric artery;
• a second largermesocolic group placed in relation to the loops and primary branches of the vessels.

Theileocolic lymph nodes, from ten to twenty in number, form a chain around theileocolic artery, but tend to subdivide into two groups, one near theduodenum and the other on the lower part of the trunk of the artery. Where the vessel divides into its terminal branches the chain is broken up into several groups:

• (a) ileal, in relation to theileal branch of the artery;
• (b) anterior ileocolic, usually of three glands, in the ileocolic fold, near the wall of thececum;
• (c) posterior ileocolic, mostly placed in the angle between theileum and thecolon, but partly lying behind the cecum at its junction with the ascending colon;
• (d) a single gland, between the layers of the mesenteriole of theappendix;
• (e) right colic, along the medial side of theascending colon.

Themesocolic lymph nodes are numerous, and lie between the layers of thetransverse mesocolon, in close relation to the transverse colon; they are best developed in the neighborhood of the right and leftcolic flexures.

One or two small glands are occasionally seen along the trunk of theright colic artery and others are found in relation to the trunk and branches of themiddle colic artery.

The superior mesenteric glands receive lymph from thejejunum,ileum,cecum,vermiform process, and the ascending and transverse parts of the colon; lymph drains into thepreaortic glands.

• 
  The lymphatics of cecum and vermiform process from the front.
• 
  The lymphatics of cecum and vermiform process from behind.

This article incorporates text in thepublic domain frompage 709 of the 20th edition ofGray's Anatomy(1918)

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