Dr. Francisco Bengoa
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Soft-tissue tumors

Spindle cell / sclerosing rhabdomyosarcoma

Soft tissueMalignant / sarcomaSkeletal muscle tumours

Epidemiology

A subtype of rhabdomyosarcoma that can affect children or adults and present in the soft tissues of the limbs. The molecular subtype matters because some alterations are associated with more aggressive behavior than the name alone suggests.

Basic features

It shows spindle-shaped cells or a sclerosing (dense fibrous) stroma; molecular tests such as MYOD1 can change the risk assessment.

Usual treatment

It requires multimodal management with chemotherapy, surgery, and radiotherapy, depending on age, site, extent, and molecular biology. Before chemotherapy starts it is worth discussing fertility preservation with the team, because some of these treatments can affect it and the options have to be raised beforehand.

Outcomes and prognosis

The prognosis is variable and depends on age, resectability, metastasis, and genetic alterations.

Warning signs

These signs do not necessarily mean cancer, but they warrant evaluation before operating on or needling a mass.

  • A soft-tissue mass that grows, is larger than 5 cm, or is deep.
  • Persistent, night-time or progressive bone pain, especially if it limits activity.
  • A fracture from minimal trauma, or an aggressive bone lesion on an X-ray.
  • A lump that comes back after previous surgery.
  • Neurological symptoms, rapid swelling, or pain associated with a mass.

This information is general and does not replace a medical evaluation. A musculoskeletal tumor must be interpreted together with imaging, physical examination, biopsy when appropriate and each patient's context.

Specialist evaluation

If you have a mass, a bone lesion or a report suggesting a tumor, book an evaluation.

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