Ewing's sarcoma is a rare form of malignant cancer that mainly affects bones and soft tissue. Several synonyms for Ewing's sarcoma are available, including Ewing's tumor, primitive neuroectodermal tumor (PNET), and peripheral neuroepithelial tumor. Other terms used to describe this cancer include undifferentiated round cell sarcoma, small blue cell tumor, and Ewing's family of tumors. While all these synonyms refer to the same condition, healthcare professionals may use different terms depending on the specific characteristics and location of the tumor. Regardless of the name, early detection and prompt treatment are critical to improving survival rates for patients with Ewing's sarcoma.