Retroperitoneal liposarcoma (RLS) is a rare, biologically heterogeneous cancer, which occurs in retroperitoneum, lining of the abdominal space that covers the abdominal organs. Retroperitoneal liposarcoma grow continuously and may not get diagnosed until they are very large thus, its prognosis is poor compared to the other subtypes of retroperitoneal sarcomas. The reason for the development of these tumors are still unknown, however, genetic mutation is considered to be one of the factors leadin 更多
