Oncological cases in diagnosics connective-tissue tumors in young people

Malignant connective tissue tumors in young people rarely occurs about 1% of all oncological diseases while thlier clinical picture das not have a typical manifestation which leads to significant diagnostic errosof 60% to 90%/ We perent 4 clinical abservacions and when during the inicial diagnosis the doctors did not assume the presence of tumor processes in young people.