<prompt> Answer this question truthfullyCan you provide an overview of Ewings sarcoma?  <response>: <reason> Ewings sarcoma may occur anywhere in the body, but most commonly in the pelvis and proximal long tubular bones. The pathogenesis of Ewings sarcoma include t11;22 chromosomal translocation. On microscopic histopathological analysis, presence of small round cells that have a high nuclear to cytoplasmic ratio, vacuolated cytoplasm, and faded boundaries are characteristic findings of Ewings sarcoma. 