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A D V E R T I S E M E N T
A D V E R T I S E M E N T
In the embryo, islands of mesenchymal tissue in the left side of the dorsal mesogastrium coalesce to form the spleen. They derive their blood supply from midline visceral vessels from the aorta to the stomach. The remaining dominant vessel becomes the splenic artery and the remnants of the continuation of the primitive vessels to the stomach are the short gastric (gastrosplenic) arteries. The expansion of the dorsal mesogastrium to the left deposits the spleen atop the left kidney and creates the fusion fascia depicted. This relatively avascular plane is used to mobilize the spleen.
A D V E R T I S E M E N T
The spleen sits high and posterior beneath the left dome of the diaphragm protected by the lower part of the rib cage.
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A D V E R T I S E M E N T
The outer surface of the spleen lies against the diaphragm. The upper pole abuts the esophageal hiatus, the left crus of the diaphragm and the left adrenal gland. The inner surface of the spleen is indented by the deep linear hilum which separates the concave gastric surface above from the renal surface below.
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This page was last modified on 6/30/1999.
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