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Living with Soft tissue sarcoma

A cancer that starts in the body's soft tissues, such as muscle, fat, blood vessels and nerves.

Understanding Soft tissue sarcoma

Soft tissue sarcoma is a cancer caused by abnormal and uncontrolled cell growth in the body's soft tissues.

Soft tissues connect, support and surround other body parts, and include muscle, fat, blood vessels, nerves and tendons. Many people with early soft tissue sarcoma have no symptoms. Most cases occur with little or no family history.

Signs & symptoms

GARD doesn't list a full symptom list for this condition. Based on its summary, symptoms depend on the tumor's location and size and may include:

  • A lump under the skin
  • Pain
  • Difficulty breathing

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Sarcoma Foundation of America may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists)
Expert care
Expert lists: Sarcoma Foundation of America
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Sarcoma Foundation of America
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What type of sarcoma do I have?
Which tests show how far it has spread?
Should I talk to a genetics counselor about inherited risk?

Quick facts

GARD says most cases occur without a family history. Risk is higher after radiation therapy or with certain inherited disorders, such as Gorlin syndrome, Li-Fraumeni syndrome and neurofibromatosis type 1.

Also known as: connective tissue sarcoma; malignant mesenchymal tumor; malignant mesenchymal tumour; non-rhabdo. soft tissue sarcoma; sarcoma of soft tissue; sarcoma of the soft tissue

Patient organizations

Source: NIH GARD · Soft tissue sarcomaGARD ID 4898 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Soft tissue sarcoma.

Explore the Soft tissue sarcoma blog

Explore research for Soft tissue sarcoma

Explore actively recruiting Soft tissue sarcoma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Soft tissue sarcoma with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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