Ewings Sarcoma—Child

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

Definition

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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Causes

It is thought that Ewing sarcoma is caused by a genetic problem.

Risk Factors

Factors that increase the risk of Ewing sarcoma include:
  • Race: Caucasians are more likely to get this type of cancer than people who are African American or Asian
  • Age: More common among teenagers

Symptoms

Symptoms may include:
  • Pain, redness, and swelling surrounding the tumor
  • Difficulty moving around
  • Fever
  • Weight loss and reduced appetite
  • Fatigue
  • Paralysis and loss of bladder control (in cases where the tumor is near the spinal cord)
  • Numbness, tingling, and paralysis (caused by compression of nerves by the tumor)
  • Difficulty breathing if the tumor is in the chest wall
Ewing sarcoma can also weaken the bone leading to unexplained fracture of the bone.

Diagnosis

The doctor will ask 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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