Rhabdomyosarcoma tumor is a cancerous tumor that originates in the soft tissues due to uncontrolled, fast growing of the rhabdomyoblasts (a primitive muscle cell). Therefore, rhabdomyoblasts will not differentiate into striated muscles. This tumor may appear in any part of the body, except the bones, since muscle cells are found over the whole body. However, the four locations that rhabdomyosarcoma where usually appears as a noticeable lump are the head and neck (35-40%), genitourinary tract (20%), extremities (15-20%), and trunk (10-15%). Rhabdomyosarcoma is the most common soft tissue tumor in children that accounts for 4-8% of all pediatric cancers. This tumor may metastasize to other body parts such as lungs, lymph nodes, and brain. Histologically, rhabdomyosarcoma is divided into two major types: embryonal and alveolar, but embryonal rhabdomyosarcoma accounts for the majority of the cases (80%). Embryonal rhabdomyosarcoma affects children under 15 years and the tumor is found mostly in head and neck, and genitourinary tract. The cancerous cells in the embryonal type have "embryo-like" appearance under the microscope. Generally, diagnosis is done by tumor biopsy test, blood and urine test, and radiological findings. Patients are treated surgically with the association of chemotherapy, radiation and/or supportive treatments.