USC Surgery / Conditions / Retroperitoneal Sarcoma
Retroperitoneal Sarcoma

Retroperitoneal Sarcoma (c) 2018 William Tseng, MD

A sarcoma is a rare type of cancer that grows in the body’s connective tissues like muscles, bones, tendons, blood vessels and fatty tissues. A retroperitoneal sarcoma is a type of tumor that grows in the retroperitoneum, or area in the back of the abdomen, next to the kidneys. This type of tumor often grows over a long period of time while undetected, and commonly reaches such large sizes as 20-30 centimeters. The two most common types of sarcomas are liposarcoma and leiomyosarcoma, cancers that originate from fat and smooth muscle, respectively.

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