Recurrence Guide

What Does Recurrence Mean?

Recurrence means a tumor has returned after treatment.

SFT can return months or years after the original diagnosis, sometimes even after a long period without evidence of disease.

Doctors generally describe recurrence in two ways:

Some patients may have both local and distant disease.

The type, location, and extent of recurrence help determine which treatments may be appropriate.

SFT can sometimes leave behind microscopic tumor cells that are too small to detect, even after treatment appears successful. These cells may grow over time.

The likelihood of recurrence is influenced by several factors, including the tumor’s biological behavior, size, location, pathology findings, and previous treatment.

Some SFTs grow very slowly, while others behave more aggressively.

A recurrence does not automatically mean your previous treatment was unsuccessful or that you have run out of options.

What Happens When Recurrence Is Suspected?

A new finding on a scan does not always mean SFT has returned.

Your doctor may recommend further evaluation to understand what has changed.

1. Review your scans. Your care team will usually compare current images with earlier scans. They may recommend MRI, CT, or another imaging test to better evaluate the area and determine whether there are findings elsewhere in the body. The scans you need will depend on the location of your original tumor, your treatment history, and your current findings.
2. Decide whether a biopsy is needed. Sometimes imaging provides enough information for your doctors to make a treatment recommendation. In other situations, a biopsy may be useful to confirm recurrence, rule out another condition, or understand whether the tumor has changed. A biopsy can also help identify unusual changes in tumor appearance, including a more aggressive pattern called dedifferentiation. Your team will consider the potential value of a biopsy, whether the tumor can be safely sampled, and whether the results could change your care.
3. Have your case reviewed by a specialist. Recurrence is an important time to consult a sarcoma specialist, particularly if you have not already done so. A multidisciplinary team may include surgeons, medical oncologists, radiation oncologists, radiologists, and pathologists. Together, they can review your previous treatment, current imaging, and available options.

For more information, see Part 6: Finding a Sarcoma Center.

Understanding Your Treatment Options

Treatment for recurrent SFT depends on several factors:

• Where the tumor has returned
• Whether there is one tumor or several
• How quickly the disease appears to be growing
• Whether the tumor is causing symptoms
• The treatments you have already received
• Your overall health and personal priorities

Your doctors may recommend one treatment or a combination of approaches.

Surgery may be an option when recurrent SFT can be safely removed.

For some patients, another operation may provide long-term disease control. In selected cases, complete removal of a localized recurrence may offer the possibility of cure.

The decision depends on the tumor’s location, whether it can be removed completely, and the potential effects of surgery on surrounding organs and normal function.

If you’ve had surgery in the same area before, your surgeon will also consider scar tissue and changes from earlier treatment.

Radiation may be used to treat a recurrence when surgery is difficult, after surgery in selected circumstances, or to help control symptoms.

Some patients may be candidates for stereotactic radiation, including stereotactic body radiation therapy (SBRT) or stereotactic radiosurgery (SRS). These techniques deliver precisely targeted radiation and may be useful for selected tumors.

If you’ve previously received radiation to the same area, your radiation oncologist will evaluate whether additional treatment can be delivered safely.

Ablation uses heat, cold, or other energy to destroy tumor tissue.

It may be an option for selected tumors in locations such as the liver or lungs, particularly when surgery is difficult or would involve substantial recovery.

The suitability of ablation depends on tumor size, location, nearby structures, and other medical considerations.

If the disease cannot be fully treated with surgery or radiation, or has spread to multiple areas, your doctor may discuss systemic therapy.

Systemic treatments work throughout the body and may include medicines that affect tumor blood vessel growth, chemotherapy, or treatments being studied in clinical trials.

Clinical trials may provide access to investigational approaches and help researchers learn which treatments work best for SFT.

See Part 5: Metastatic and Advanced SFT and Part 9: Joining Research.

In certain situations, your specialist may recommend monitoring a small, slow-growing, asymptomatic recurrence with regular scans before starting another treatment.

This approach is sometimes called active surveillance.

Whether it is appropriate depends on how the tumor is behaving, where it is located, and the risks of waiting.

If active surveillance is recommended, ask what changes would prompt treatment and when your next scan should occur.

Does Recurrence Mean My Tumor Has Changed?

Sometimes a recurrent SFT behaves differently from the original tumor.

Doctors may notice changes in growth rate, tumor appearance, or pathology findings.

In a small number of cases, SFT develops a more aggressive pattern called dedifferentiation.

A pathologist may recommend reviewing earlier tissue samples alongside a new biopsy to look for important differences.

Your specialist may also discuss additional molecular testing, including changes involving genes such as TERT or TP53.

These findings are being studied to better understand tumor behavior, but they do not always affect treatment decisions. Additional testing should be guided by your clinical circumstances.

Ask your specialist: Is there any evidence that my tumor is behaving differently, and would additional testing help us make treatment decisions?

Your Previous Treatment Matters

When considering treatment for recurrence, your doctors need to understand what treatments you’ve already received.

For example, previous surgery may affect what can safely be removed, and earlier radiation may limit how much additional radiation can be given.

Try to have the following information available

• Dates and locations of previous surgeries
• Pathology reports, including surgical margins when available
• Previous radiation treatment locations and doses
• Medicines you’ve received and how you responded
• Earlier scan images and reports
• Major side effects or complications from treatment

If your care has involved several hospitals, ask whether your records and images can be shared with your current team.

You can find help organizing this information in Preparing for a Visit.

Making Decisions About Your Next Steps

When SFT returns, there may be more than one reasonable treatment approach.

One option may offer a greater chance of controlling the tumor but involve a longer recovery or greater risk of side effects. Another may allow you to continue daily activities with fewer immediate disruptions.

Your treatment plan should consider both the medical evidence and what matters to you.

Questions worth discussing include:

• What is the goal of this treatment: cure, long-term control, slowing growth, or relief of symptoms?
• What are the expected benefits and possible side effects?
• How could treatment affect my mobility, energy, independence, or daily activities?
• What other options are available?
• What happens if we delay treatment or continue monitoring?
• How will we know whether the treatment is working?

You can ask for time to consider your options when the medical situation allows. A second opinion may help you feel more confident in the decision.

Coping With Recurrence

Finding out that SFT has returned can be difficult, especially if you’ve already been through surgery, radiation, or other treatments.

You may feel anxious, frustrated, disappointed, or uncertain about the future. Some people want to learn everything immediately, while others need time to process the news.

There is no single right way to respond.

It may help to talk with someone you trust, bring a family member or friend to appointments, or connect with others who have experienced SFT recurrence.

If you feel overwhelmed, ask your healthcare team about counseling, social work, or other emotional support resources.

Some people live with recurrent SFT for many years, although individual experiences vary widely.

For additional information and support, see Part 7: Living with SFT.

Updating Your Follow-Up Plan

After a recurrence, your monitoring schedule may change.

Your doctors may recommend more frequent imaging, different types of scans, or additional follow-up visits.

Before moving forward, make sure you understand

• Which parts of your body will be monitored
• When your next scan is scheduled
• Who will review the results
• How treatment response or tumor growth will be assessed
• What symptoms or changes should prompt an earlier call

Ask your team to update your written care plan to reflect the recurrence and any new treatment.

See Part 3: Follow-Up and Surveillance.

Your Next Steps After a Suspected or Confirmed Recurrence

Use this checklist to prepare for your next discussion with your care team.

• Understand the findings. Ask what has changed and whether recurrence is confirmed.
• Review your imaging. Make sure your care team has access to relevant previous scans.
• Discuss additional testing. Ask whether a biopsy or further imaging would help.
• Consult an experienced specialist. Consider a sarcoma center or multidisciplinary review.
• Understand your options. Discuss the goals, benefits, and risks of each approach.
• Review your treatment history. Gather records of earlier surgery, radiation, and medicines.
• Make a follow-up plan. Know what happens next and who is coordinating your care.