What is the most common primary malignancy of the retroperitoneum?

Liposarcomas are the most common primary retroperitoneal tumor. They comprise 10–15% of all soft tissue sarcomas.

Where is retroperitoneal mass located?

The retroperitoneum extends from the diaphragm superiorly to the pelvis inferiorly and is situated between the posterior parietal peritoneum anteriorly and the transversalis fascia posteriorly. The retroperitoneum is broadly divided into the anterior and posterior pararenal, perirenal, and great vessel spaces.

What is the difference between peritoneum and retroperitoneum?

Difference Between Intraperitoneal and Retroperitoneal Space Intraperitoneal space refers to the space within the peritoneum, which is a thin transparent membrane, lining the abdominal cavity, while retroperitoneal space refers to the space occurring outside the peritoneum.

What is the retroperitoneum?

The area in the back of the abdomen behind the peritoneum (the tissue that lines the abdominal wall and covers most of the organs in the abdomen). The organs in the retroperitoneum include the adrenal glands, aorta, kidneys, esophagus, ureters, pancreas, rectum, and parts of the stomach and colon.

Can a retroperitoneal mass be benign?

Most retroperitoneal tumors are mesodermal in origin and can arise from any tissue type present in the retroperitoneum. They can be benign or malignant (4).

Can a retroperitoneal mass be removed?

The surgical approach for the treatment of benign retroperitoneal tumors presenting with vascular invasion should be successful in fully removing the tumors, whilst effectively protecting blood vessels; therefore, the surgical approach may significantly lower the incidence of post-operative complications and reduce the …

How do you treat retroperitoneal mass?

It is recommended that retroperitoneal tumors are immediately treated by an experienced team of surgeons, employing a multidisciplinary approach. The only current treatment option that is known to prolong survival in patients with these tumors is wide surgical resection.

What abdominal organs are retroperitoneal?

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

How do I get into retroperitoneum?

Entering the retroperitoneum The space is entered by looking for a site with normal peritoneum, tenting it with laparoscopic Allis graspers, and sharply entering, away from any sites with disease14. The retroperitoneum is entered most safely through the medial leaf of the broad ligament near the pelvic brim.

What are the 5 main spaces of retroperitoneum?

Gross anatomy

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

Can retroperitoneal sarcoma be cured?

Complete surgical resection with negative margins remains the cornerstone of treatment of nonmetastatic RPS and is the only chance for cure. In order to achieve negative margins, multivisceral en bloc resection is often necessary.

Can you tell if a mass is cancerous without a biopsy?

Normal cells will look uniform, and cancer cells will appear disorganized and irregular. Most of the time, a biopsy is needed to know for sure if you have cancer. It’s considered the only definitive way to make a diagnosis for most cancers.

How is retroperitoneal fasciitis (RPF) diagnosed?

Another important clue to the diagnosis is asymmetric involvement of the retroperitoneal fascial planes and deep tissues. Fasciitis in the retroperitoneum may originate from infected retroperitoneal organs or from infection that spreads along indirect and/or direct pathways from a primary source elsewhere in the body.

What are the three retroperitoneal planes?

There are three retroperitoneal planes that act as potential spaces: the retromesenteric plane (RMP) between the anterior pararenal space and perirenal space; the retrorenal plane (RRP) between the perirenal space and posterior pararenal space; and the lateral conal plane (LCP), a potential space communicating laterally with these two other planes.

What are primary retroperitoneal masses?

Primary retroperitoneal masses include a diverse, and often rare, group of neoplastic and non-neoplastic entities that arise within the retroperitoneum but do not originate from any retroperitoneal organ. Their overlapping appearances on cross-sectional imaging may pose a diagnostic challenge to the …

Which single-organism infections are most commonly isolated in retroperitoneal fasciitis?

Single-organism Streptococcus (β-hemolytic group A or other) infections were more commonly isolated in cases of retroperitoneal fasciitis that are due to retroperitoneal extension from necrotizing fasciitis of the lower extremities (26, 29).

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