Soft tissue sarcomas are rare mesenchymal tumors that can arise in various soft tissues of the body. They are classified based on their cell of origin and differentiation. Treatment involves surgical excision with negative margins, with adjuvant radiation therapy sometimes used to improve local control. Prognosis depends on tumor size, grade, depth and margins of resection, with retroperitoneal and high grade tumors having a worse prognosis due to difficulty obtaining clear margins. Metastatic disease typically spreads to the lungs and has a poor median survival of 8-12 months.