<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 5-year-old boy is brought to the pediatric clinic for evaluation of fever, pain, swelling in the left leg, and limping. Review of systems and history is otherwise unremarkable. The vital signs include: pulse 110min, temperature 38.1C 100.6F, and blood pressure 10070 mm Hg. On examination, there is a tender swelling over the lower part of his left leg. Which 1 of the following X-ray findings is most suggestive of Ewings sarcoma?? A: Mixed lytic and blastic appearance in the X-ray, B: X-ray showing lytic bone lesion with periosteal reaction, C: X-ray showing broad-based projections from the surface of the bone, D: X-ray showing deep muscle plane displacement from the metaphysis, E: X-ray showing a sharply marginated radiolucent area within the apophysis,  <response>: This is a clinical vignette describing a 5-year-old boy with fever, left leg pain, swelling, and limping. The question asks which X-ray finding is most suggestive of Ewings sarcoma, a malignant bone tumor that often arises in children and adolescents. To answer this, I need to know the key radiographic features of Ewings sarcoma. Ewings sarcoma classically appears as a lytic, destructive lesion with periosteal reaction and cortical bone destruction on X-ray. Choice B describes these classic radiographic findings of Ewings sarcoma. Choices A, C, D, and E describe other radiographic findings that are less specific for Ewings sarcoma. Choice A describes a mixed lytic and blastic lesion, which is less typical. Choices C and D refer to muscle plane displacement and broad-based projections from the bone surface, which may be seen but are also non-specific. Choice E describes a benign-appearing radiolucent lesion within the apophysis, which would not be characteristic of Ewings sarcoma.B: X-ray showing lytic bone lesion with periosteal reaction 