What is an Extraperitoneal space?

What is an Extraperitoneal space?

Anatomical Parts The extraperitoneal space is the portion of the abdomen and pelvis which does not lie withinperitoneum. It includes: Retroperitoneal space, situated posteriorly to the peritoneum. Preperitoneal space, situated anteriorly to the peritoneum. Retropubic space, deep to the pubic bone.

What are the boundaries of the anterior abdominal wall?

The anterior abdominal wall forms the anterior limit of the abdominal viscera and is defined superiorly by the xiphoid process of the sternum and costal cartilages and inferiorly by the iliac crest and pubic bones of the pelvis.

Is the uterus extraperitoneal?

Uterus and Cul-De-Sacs Sagittal graphic of the female pelvis shows the bladder, uterus, and rectum, all of which are extraperitoneal. Note the posterior vaginal fornix extends more cephalad than the anterior vaginal fornix. The peritoneum has been highlighted to show the cul-de-sacs.

Where is retroperitoneal space?

The retroperitoneum is an anatomical space located behind the abdominal or peritoneal cavity. Abdominal organs that are not suspended by the mesentery and lie between the abdominal wall and parietal peritoneum are said to lie within the retroperitoneum. Several individual spaces make up the retroperitoneum.

Does retroperitoneal include bladder?

Retroperitoneal Structures Other organs located in the retroperitoneal space are the kidneys, adrenal glands, proximal ureters, and renal vessels. Organs located below the peritoneum in the subperitoneal space include the lower third of the rectum and the urinary bladder.

What are the retroperitoneal structures?

The retroperitoneal space contains the kidneys, adrenal glands, pancreas, nerve roots, lymph nodes, abdominal aorta, and inferior vena cava.

What are the functions of the anterior abdominal wall?

The major functions of the abdominal wall include:

• Providing a durable and flexible covering to prevent the abdominal viscera from leaving the abdominal cavity.
• Protecting internal abdominal organs from trauma/injury.
• Maintaining the anatomical position of the abdominal organs.

What is anterior abdominal wall lipoma?

Lipomas are also regarded as the most common tumors affecting the abdominal wall (10). Abdominal wall lipomas are usually painless and present as mobile superficial masses. Classically, lipomas are soft tissue masses with a homogeneous mature adipose tissue density or signal on CT or MRI (Figure 1).

What are the 5 main spaces of Retroperitoneum?

Gross anatomy

• anterior pararenal space.
• perirenal space.
• posterior pararenal space.

Is the spleen in the retroperitoneal space?

Which organs are intraperitoneal? We’ve got the liver, the spleen, the stomach, the first part of the duodenum. The retroperitoneal organs are the kidneys at the back.

How are the subperitoneal cavity and peritoneum related?

The subperitoneal space and peritoneal cavity are two mutually exclusive spaces that are separated by the peritoneum. Each is a single continuous space with interconnected regions. Disease can spread either within the subperitoneal space or within the peritoneal cavity to distant sites in the abdomen and pelvis via these interconnecting pathways.

What makes up the extraperitoneal space of the rectum?

The rectal extraperitoneal space is the space between the wall of the rectum below the rectal perito- neal reflection and parietal pel- vic fascia. It contains abundant loose con- nective tissue and adipose tissue and is separated by the pelvic floor fascia and liga- ment [1].

Where is the extraperitoneal space in the body?

The extraperitoneal segment of the rectum and its surrounding adipose tissue are encased by a fascia, like a sleeve, that can be seen on CT and MRI in healthy populations.

What are the organs in the anterior pararenal space?

The anterior pararenal space contains the pancreas, duodenum, and ascending and descending colon. The perinephric space contains the kidney and adrenal gland. The posterior pararenal space has no organs and is continuous laterally with the extraperitoneal fat of the properitoneal flank stripe.