Primary breast Ewing sarcoma in a young adult: diagnostic challenges and neoadjuvant chemotherapy success. Journal of Biological Research - Bollettino della Società Italiana di Biologia Sperimentale, [S. l.], v. 99, n. 1, 2026. DOI: 10.4081/jbr.2026.14434. Disponível em: https://www.pagepressjournals.org/jbr/article/view/14434. Acesso em: 17 aug. 2026.