Retroperitoneal Sarcoma is a rare kind of cancer. Sarcomas are different from the much more common carcinomas because they happen in a different kind of tissue. Sarcomas grow in connective tissue cells that connect or support other kinds of tissue in your body.

The Retroperitoneum is the space between the peritoneum and the posterior abdominal wall that contains the kidneys and associated structures, the pancreas, and part of the aorta and inferior vena cava.

Diagnosis of Retroperitoneal Sarcoma is usually made by a combination of a CT scan and in most cases, needle biopsy. The risk of spreading or “seeding” the tumor is exceedingly low and almost nonexistent with modern biopsy techniques.

Retroperitoneal may cause the Following Symptoms :

• Blood in Stools

• Dull Pain in the Abdomen or Back
• Lower Extremity Swelling
• Abdominal Pain
• Weight Loss
• Abdominal Mass

Risk factors for RPS include :

• Inherited Syndromes
• Radiation Therapy for Cancer
• Chronic Swelling (lymphedema)
• Exposure to Chemicals

• Surgery :
The goal of surgery for sarcoma is to remove all of the cancer cells. Sometimes it's necessary to amputate an arm or leg to remove all of the cancer, but surgeons try to preserve limb function when possible. Sometimes all of the cancer can't be removed without hurting important structures, such as nerves or organs.
• Radiotherapy :
This treatment uses high-energy radiation beams to destroy cancer cells. It is not routinely used to treat retroperitoneal sarcomas.
• Chemotherapy :
This treatment useu is a drug treatment that uses chemicals to kill cancer cells. Some types of sarcoma are more likely to respond to chemotherapy treatment than others.