RT Journal Article T1 SEOM Clinical Guideline of management of soft-tissue sarcoma (2016). A1 López-Pousa, A A1 Martin Broto, J A1 Martinez Trufero, J A1 Sevilla, I A1 Valverde, C A1 Alvarez, R A1 Carrasco Alvarez, J A A1 Cruz Jurado, J A1 Hindi, N A1 Garcia Del Muro, X K1 Clinical guidelines K1 Sarcoma K1 Soft-tissue tumors K1 Uncommon tumors AB Soft-tissue sarcomas are uncommon and heterogeneous tumors of mesenchymal origin. A soft-tissue mass that is increasing in size, greater than 5 cm, or located under deep fascia are criteria for suspicion of sarcoma. Diagnosis, treatment, and management should preferably be performed by a multidisciplinary team in reference centers. MRI and lung CT scan are mandatory for local and distant assessment. A biopsy indicating histological type and grade is needed previous to the treatment. Wide surgical resection with tumor-free tissue margin is the primary treatment for localized disease. Radiotherapy is indicated in large, deep, high-grade tumors, or after marginal resection not likely of being improved with reexcision. Neoadjuvant and adjuvant chemotherapy improve survival in selected cases, usually in high-grade sarcomas of the extremities. In the case of metastatic disease, patients with exclusive lung metastasis could be considered for surgery. First-line treatment with anthracyclines (or in combination with ifosfamide) is the treatment of choice. New drugs have shown activity in second-line therapy and in specific histological subtypes. YR 2016 FD 2016 LK http://hdl.handle.net/10668/10655 UL http://hdl.handle.net/10668/10655 LA en DS RISalud RD Apr 7, 2025