Ewing Sarcoma—Child

(Peripheral Primitive Neuroectodermal Tumors—Child; PNET—Child; Ewing's Family of Tumors—Child)


Ewing sarcoma is a type of cancer that occurs in the bone or soft tissue . Areas that are commonly affected include the pelvis, thigh, lower leg, upper arm, and chest wall. Prognosis depends on the location of the tumor and whether it has spread to other parts of the body.
Leg and Pelvic Bones—Common Sarcoma Sites
Leg bones
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It is thought that Ewing sarcoma is caused by a genetic problem.

Risk Factors

Ewing sarcoma is more common in Caucasians, teenagers, and males.


Symptoms may include:
  • Pain, redness, and swelling surrounding the tumor
  • Difficulty moving around
  • Fever
  • Weight loss and reduced appetite
  • Fatigue
  • Loss of bladder control
  • Numbness, tingling, and paralysis
  • Difficulty breathing
Ewing sarcoma can also weaken the bone leading to unexplained fracture of the bone.


You will be asked about your child’s symptoms and medical history. A physical exam will also be done. Ewing may be suspected if a bone breaks after a minor injury. A sample of the tissue will be removed and sent for examination, also called a biopsy . Images of the body may be taken to locate the tumor and determine if it has spread to other tissues. Images may be taken with:

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