RT Journal Article T1 Clinical practice guidelines for the diagnosis and treatment of patients with soft tissue sarcoma by the Spanish group for research in sarcomas (GEIS). A1 Garcia del Muro, Xavier A1 de Alava, Enrique A1 Artigas, Vicenç A1 Bague, Silvia A1 Braña, Alejandro A1 Cubedo, Ricardo A1 Cruz, Josefina A1 Mulet-Margalef, Nuria A1 Narvaez, Jose A A1 Martinez Tirado, Oscar A1 Valverde, Claudia A1 Verges, Ramona A1 Viñals, Joan A1 Martin-Broto, Javier A1 Spanish Group for Research on Sarcoma, K1 Clinical practice guidelines K1 Multidisciplinary management K1 Soft tissue sarcoma K1 Treatment AB Soft tissue sarcomas (STS) constitute an uncommon and heterogeneous group of tumours, which require a complex and specialized multidisciplinary management. The diagnostic approach should include imaging studies and core needle biopsy performed prior to undertaking surgery. Wide excision is the mainstay of treatment for localized sarcoma, and associated preoperative or postoperative radiotherapy should be administered in high-risk patients. Adjuvant chemotherapy was associated with a modest improvement in survival in a meta-analysis and constitutes a standard option in selected patients with high-risk STS. In metastatic patients, surgery must be evaluated in selected cases. In the rest of patients, chemotherapy and, in some subtypes, targeted therapy often used in a sequential strategy constitutes the treatment of election. Despite important advances in the understanding of the pathophysiology of the disease, the advances achieved in therapeutic results may be deemed still insufficient. Moreover, due to the rarity and complexity of the disease, the results in clinical practice are not always optimal. For this reason, the Spanish Group for Research on Sarcoma (GEIS) has developed a multidisciplinary clinical practice guidelines document, with the aim of facilitating the diagnosis and treatment of these patients in Spain. In the document, each practical recommendation is accompanied by level of evidence and grade of recommendation on the basis of the available data. YR 2015 FD 2015-11-12 LK http://hdl.handle.net/10668/9619 UL http://hdl.handle.net/10668/9619 LA en DS RISalud RD Apr 18, 2025