title: Primary undifferentiated sarcoma in the thorax: a rare diagnosis in young patients.
authors.affiliation: Hospital Heliópolis, São Paulo, SP, Brazil.
authors.forename: Carlos Henrique Simões de Oliveira
authors.initials: CH
authors.lastname: Waszczynskyi
authors.affiliation: A.C.Camargo Cancer Center e Hospital Heliópolis, São Paulo, SP, Brazil.
authors.forename: Marcos Duarte
authors.initials: MD
authors.lastname: Guimarães
authors.affiliation: Hospital Heliópolis, São Paulo, SP, Brazil.
authors.forename: Luiz Felipe Sias
authors.initials: LF
authors.lastname: Franco
authors.affiliation: Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre RS, Brazil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Hochhegger
authors.affiliation: Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
authors.forename: Edson
authors.initials: E
authors.lastname: Marchiori