Rhabdomyosarcoma is a cancer that occurs in muscle cells and tends to occur in children 1-5 years old. There are three main types:

  • Embryonal—often occurs in the head, neck, or genital or urinary organs
  • Alveolar—often occurs in the arms, legs, chest, abdomen, or genital or anal areas
  • Anaplastic—rarely occurs in children

Cancer occurs when cells in the body divide without control or order. Eventually these cells form a mass of tissue called a growth or tumor. Cancer cells also invade and destroy nearby tissues and spread to other parts of the body.

Cancer Growth
Cancer Cell Division
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The exact cause is unknown. A combination of environmental and genetic factors probably play a role.