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abstractpubmed· Abstract 2018· item PMID:29854509

Successful Spontaneous Pregnancy after Treatment for Ewing Sarcoma including Sacrectomy. Ewing sarcomas are highly malignant bone tumors and usually occur in childhood. Radiation therapy, chemotherapy, and surgical methods increase the survival rate of the affected patient, but infertility and reduced reproductive capacity are common late effects of pediatric cancer treatment.