[The diagnosis of sarcoma requires team expertise]

THE DIAGNOSIS OF SARCOMA REQUIRES TEAM EXPERTISE. Sarcoma is the prototype of the "rare cancer" which suff ers from a sometimes complicated diagnostic pathway. This is all the truer for soft tissue sarcomas for which the clinical signs are not very specific or even falsely reassuring. The key message is that any patient with a suspected sarcoma must be referred as soon as possible to an expert "sarcoma" center belonging to the NetSarc+ network to benefit from the expertise both diagnostically and therapeutically. In the centers of this expert network, the diagnostic phase begins with radiological expertise both on the analysis of tumor semiology and on the taking of specific samples for diagnostic purposes. This precious sample allows the expert pathologist to apply the most accurate techniques to off er a precise diagnosis and determine the grade of malignancy, paving the way for personalized treatment.