The retroperitoneal space (retroperitoneum) is the anatomical space in the abdominal cavity behind (retro) the peritoneum. It has no specific delineating anatomical structures. Organs are retroperitoneal if they have peritoneum on their anterior side only. Structures that are not suspended by mesentery in the abdominal cavity and that lie between the parietal peritoneum and abdominal wall are classified as retroperitoneal.
The retroperitoneum can be further subdivided into the following:
- Perirenal space
- Anterior pararenal space
- Posterior pararenal space
Read more about Retroperitoneal Space: Retroperitoneal Structures, Perirenal Space, Anterior Pararenal Space, Posterior Pararenal Space, Role in Disease
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