[Surgical margins as prognostic factor in pelvis chondrosarcoma. Cohort study in a sarcoma unit].

Introduction: chondrosarcoma is the second most common primary malignant tumor, constitutes approximately one quarter of all primary bone sarcomas. Surgical margins in pelvic chondrosarcoma have a direct impact as a prognostic factor, both on overall survival and on recurrence-free survival of this disease.

Objectives: to analyze the impact of surgical margins as a prognostic factor in pelvic chondrosarcoma.

Epidemiological profile of soft tissue sarcomas of the extremities: Incidence, histological subtypes, and primary sites.

Background: Soft tissue sarcomas (STS) are a heterogeneous group of rare tumours that represent less than 1% of all malignant, solid tumours in adults. There is limited epidemiological information regarding STS in Latin America. Therefore, the objective of this study is to present an epidemiological profile of these tumours observed at a single reference centre.