Rhabdomyosarcoma (Subscribe)  

Rhabdomyosarcoma is a fast-growing, highly malignant tumor which accounts for over half of the soft tissue sarcomas in children. Rhabdomyosarcoma tumors arise from a cell called a "rhabdomyoblast", which is a primitive muscle cell. Instead of differentiating into striated muscle cells, the rhabdomyoblasts grow out of control. Since this type...

WHAT IS RMS? There are two kinds of muscle cells in the body: smooth muscle cells and skeletal muscle cells. Smooth muscles control involuntary activities; skeletal muscles control voluntary activities. Rhabdomyosarcoma (RMS) is a malignant tumor (“cancer”) that arises from a normal skeletal muscle cell. Not very much is known about...

Discussion: - describes sarcomas of smooth muscle (leiomyosarcoma) & sarcomas of skeletal muscle (rhabdomyosarcoma); - rhabdomyosarcomas make up 2/3 of pediatric soft-tissue sarcomas; - rhabdomyosarcoma has two forms: - embryonal rhabdomyosarcoma: ...

• extremely malignant tumor of totipotential mesenchyme
• peak age: 3 - 5 yrs, 15 - 18 yrs
• site:
  • pelvis / GU tract (39%)
  • head / neck (31%)
  ...
  [Categories]
  - OCOSH Classification: Orthopaedic Oncology: Connective and Soft Tissue Neoplasms: Muscle Tissue Neoplasms: Myosarcoma: Rhabdomyosarcoma 
  

This is a descriptive category describing a large number of malignant tumors that tend to occur in childhood. They are united by having a similar histologic appearance, that is, small round blue cells. Subtle clues may be present to distinguish between the tumors. The pathologist is assisted by immunohistochemistry, electron...