[Sarcoma: a plural entity]

A PLURAL ENTITY. Sarcoma are a heterogeneous group of 150 different histopathological entities, developed from soft tissues or bone of any anatomical location.Their estimated incidence is around 70 cases for 100 000 people. They can occur in patients of any age, including children, the median age of onset being around 60 years. Most sarcomas are sporadic, since predisposing factors are rare. In France, the treatment of patiens with sarcomas must be carried out, within a center belonging to Netsarc+ networt as soon as a diagnosis is suspected, to offer them a better prognosis, mostly explained by the quality of the surgery, a major prognostic factor in these diseases.