Approximately 15-20% of soft tissue sarcomas develop in the retroperitoneum, which refers to the back of the abdomen (e.g., where the kidneys are located). Soft tissue sarcomas that grow in this region …

What is Retroperitoneal Sarcoma? A retroperitoneal sarcoma is a tumor that originates in the retroperitoneum, an area at the back of the abdominal cavity near the kidneys and pancreas. These …

Retroperitoneal sarcomas occur in the retroperitoneum. The retroperitoneum is deep in the abdomen (tummy) and pelvis, behind the abdominal lining, where organs such as the major blood vessels, …

Retroperitoneal sarcoma (RPS) is a rare tumor classified into many histological types. It is also often detected only after it has grown to a considerable size and requires extensive resection of the …

Learn about soft tissue sarcomas in the retroperitoneum, the space between the peritoneum and the posterior abdominal wall, and treatment options at Brigham and Women's Hospital.

Jan 4, 2026 · Retroperitoneal sarcoma (RPS) encompasses a heterogenous group of rare malignancies that develop in the back of the abdomen. For localized primary dis…

About this booklet This booklet is aimed at anyone who has been diagnosed with a retroperitoneal sarcoma. It explains what retroperitoneal sarcoma is, how it is diagnosed and the treatment options …

Rare sarcomas aren’t uncommon at Cleveland Clinic. We specialize in diagnosing and treating cancers like this. So, when you come here for care, you’ll have a team of providers from different specialties …

Aug 25, 2025 · Retroperitoneal sarcoma is a rare and complex cancer originating in the soft tissues of the retroperitoneum, a space deep within the abdomen. These tumors present a significant challenge …

Retroperitoneal and pelvic sarcomas have local recurrence rates of 50% or greater. The use of proton beam radiation therapy before surgery followed by aggressive surgical resection results in …