Extraperitoneal space
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The extraperitoneal space is the portion of the abdomen and pelvis which does not lie within the peritoneum.
It includes:
- Retroperitoneal space, situated posteriorly to the peritoneum
- Preperitoneal space, situated anteriorly to the peritoneum Retropubic space, deep to the pubic bone Retro-inguinal space, deep to the inguinal ligament
The space in the pelvis is divided into the following components:
- prevesical space
- perivesical space
- perirectal space