Soft Tissue Sarcoma: Symptoms, Causes, Diagnosis and Treatment

Written by Medicover Team and Medically Reviewed by Dr Kovvuru Bhaskar Reddy , Oncologists

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Soft Tissue Sarcoma is a rare group of cancers that develop in the body's soft tissues, including muscles, fat, tendons, blood vessels, nerves, and connective tissues. These tumors can occur anywhere in the body but are most commonly found in the arms, legs, chest, or abdomen. Symptoms often depend on the tumor's size and location, making early diagnosis important for effective treatment and improved outcomes.

What are the Symptoms of Soft Tissue Sarcoma?

Symptoms of soft tissue sarcoma may include a painless lump, swelling, pain caused by pressure on nearby structures, or changes in normal body function depending on the tumor's location.

Early Symptoms

In its early stages, soft tissue sarcoma may not cause any noticeable symptoms. This can make early detection challenging. However, as the tumor grows, some common symptoms may include:

A painless lump or swelling
Pain if the tumor presses on nerves or muscles
Restricted movement in the affected area

These early symptoms often depend on the tumor's location, with some areas of the body more likely to produce noticeable signs than others. For instance, sarcomas in the limbs might be detected sooner due to visible lumps, whereas those in the abdomen might remain undetected until they grow significantly. Being vigilant about any unusual changes in the body and seeking medical advice can be crucial for early detection.

Advanced Symptoms

As the cancer advances, additional symptoms may develop, such as:

Persistent pain
Noticeable lump that increases in size
Fatigue or general weakness

Advanced symptoms may also include unexplained weight loss or a feeling of fullness if the tumor presses against internal organs. These symptoms can significantly impact a patient's quality of life, making timely intervention even more critical. Recognizing these symptoms early can lead to a more timely diagnosis and treatment, improving the chances of a favorable outcome.

What are the Causes and Risk Factors of Soft Tissue Sarcoma?

The exact cause of soft tissue sarcoma is often unknown, but certain genetic conditions, radiation exposure, chemical exposure, and inherited syndromes may increase the risk of developing this cancer.

Genetic Factors

Some cases of soft tissue sarcoma are linked to inherited genetic conditions. These include:

Li-Fraumeni syndrome
Neurofibromatosis
Gardner syndrome

Genetic predispositions can lead to the development of sarcomas at a younger age, highlighting the importance of genetic counseling and testing for individuals with a family history of these conditions. Understanding these genetic links can help in identifying individuals at higher risk and implementing early surveillance strategies.

Environmental Factors

Exposure to certain chemicals and radiation can also increase the risk of developing soft tissue sarcoma. These include:

Herbicides
Vinyl chloride
Radiation therapy for other cancers

Prolonged exposure to these environmental factors, especially in occupational settings, can elevate the risk of developing sarcomas. Awareness and minimizing exposure to these carcinogens through protective measures and regulations can help reduce the incidence of environmentally induced sarcomas.

Other Risk Factors

Age: Risk increases with age.
Previous Cancer Treatments: Prior radiation therapy can increase the risk.

The risk associated with age emphasizes the need for regular health check-ups in older adults. Individuals who have undergone radiation therapy should be vigilant about any new symptoms, as they may indicate the development of secondary cancers. Understanding these risk factors can guide preventive strategies and early detection efforts.

When to See a Doctor for Soft Tissue Sarcoma?

A persistent lump, unexplained swelling, or a mass that continues to grow should be evaluated by a Medical Oncologist or Surgical Oncologist. Early diagnosis improves the chances of successful treatment and may prevent the cancer from spreading.

You should see a doctor if you have:

A lump that is increasing in size
Persistent swelling or discomfort
A deep-seated mass beneath the skin

Get medical help immediately if:

Severe pain or sudden enlargement of a tumor
Difficulty breathing or chest symptoms
Neurological symptoms caused by tumor compression

These could be signs of a serious complication like Soft Tissue Sarcoma, which needs urgent care.

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How is Soft Tissue Sarcoma Diagnosed?

Diagnosing soft tissue sarcoma typically involves a combination of imaging tests, biopsies, and other diagnostic procedures. Accurate diagnosis is crucial for determining the most effective treatment plan and improving patient outcomes.

Imaging Tests

MRI (Magnetic Resonance Imaging)

MRI uses powerful magnets and radio waves to create detailed images of the inside of the body. It is particularly useful for identifying soft tissue tumors. MRIs can provide detailed information about the tumor's size, shape, and relation to surrounding structures, aiding in precise treatment planning.

CT Scan (Computed Tomography)

A CT scan uses X-rays to create cross-sectional images of the body. It helps determine the size and location of the tumor. CT scans can also be used to check for metastasis, or spread, to other parts of the body, which is crucial for staging the cancer and planning treatment.

Ultrasound

Ultrasound uses sound waves to produce images of the inside of the body. It is often used to evaluate lumps or masses. Ultrasound is particularly beneficial for guiding needle biopsies, allowing for accurate sampling of the tumor tissue for further analysis.

Biopsy

A biopsy involves removing a small sample of tissue from the suspected tumor for laboratory analysis. There are different types of biopsies:

Core Needle Biopsy: Uses a large needle to remove a core of tissue.
Incisional Biopsy: Removes a portion of the tumor.
Excisional Biopsy: Removes the entire tumor.

Biopsy results provide definitive information about the type and grade of the sarcoma, which are critical for determining the most appropriate treatment. Sometimes, molecular testing is performed on biopsy samples to identify specific genetic mutations that may be targeted by novel therapies.

Laboratory Tests

Laboratory tests, including blood tests and genetic testing, can provide additional information about the tumor and help guide treatment decisions. These tests can also help in monitoring the patient's response to treatment and detecting any recurrence of cancer.

What are the Treatment Options for Soft Tissue Sarcoma?

The treatment for soft tissue sarcoma depends on various factors, including the type, size, location, and stage of the tumor, as well as the patient's overall health. Treatment plans are often multidisciplinary, involving a team of specialists to address the complex nature of the disease.

Surgery

Surgery is often the primary treatment for soft tissue sarcoma. The goal is to remove the tumor along with a margin of healthy tissue to ensure complete removal. Types of surgery include:

Wide Local Excision: Removal of the tumor with some surrounding healthy tissue.
Limb-Sparing Surgery: Removes the tumor without amputating the limb.
Amputation: In severe cases, amputation may be necessary to remove the tumor completely.

Advancements in surgical techniques have improved outcomes, allowing for more limb-sparing procedures and preserving functionality. Post-operative rehabilitation is often necessary to restore mobility and strength, particularly in cases involving limb surgery.

Radiation Therapy

Radiation therapy uses high-energy rays to kill cancer cells. It can be used before surgery to shrink the tumor or after surgery to kill any remaining cancer cells. Types of radiation therapy include:

External Beam Radiation: Delivers radiation from a machine outside the body.
Brachytherapy: Places radioactive material inside the body near the tumor.

Radiation therapy can be tailored to minimize damage to surrounding healthy tissues, reducing side effects. In some cases, it may be used as the primary treatment when surgery is not feasible or as an adjunct to enhance the effectiveness of other treatments.

Chemotherapy

Chemotherapy uses drugs to kill cancer cells. It can be administered orally or intravenously. Chemotherapy is often used when the cancer has spread to other parts of the body.

While chemotherapy can be effective, it also comes with potential side effects, such as nausea, fatigue, and hair loss. Newer chemotherapy regimens aim to reduce these side effects while maintaining efficacy.

Targeted Therapy

Targeted therapy uses drugs that specifically target cancer cells without affecting normal cells. These drugs can block the growth and spread of cancer by interfering with specific molecules involved in tumor growth.

Targeted therapies offer a more personalized approach to treatment, with the potential for fewer side effects compared to traditional chemotherapy. Research is ongoing to identify new targets and develop drugs that can effectively treat different types of sarcomas.

Immunotherapy

Immunotherapy boosts the body's immune system to fight cancer. It includes treatments like checkpoint inhibitors and monoclonal antibodies.

Immunotherapy is a promising area of research, with the potential to provide long-lasting responses in some patients. Clinical trials are exploring new immunotherapeutic agents and combinations to improve out comes for those with advanced soft tissue sarcoma.

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What is the Recovery Process for Soft Tissue Sarcoma?

Recovery from Soft Tissue Sarcoma depends on the tumor stage, treatment method, and overall health of the patient. Many individuals require rehabilitation to restore strength, mobility, and function after treatment.

Regular follow-up care is essential to monitor for recurrence, manage treatment-related effects, and support long-term recovery.