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PubMed This is a summary of 18 peer-reviewed journal articles Updated
Surgical Oncology

Surgical Treatment & Radiation Therapy

At a Glance

The standard treatment for localized soft tissue sarcoma is a combination of surgical removal (aiming for an R0 negative margin) and radiation therapy. Preoperative radiation is often preferred to preserve long-term limb function, followed by mandatory physical therapy for optimal recovery.

For most localized soft tissue sarcomas, the standard of care is a combination of surgery and radiation therapy. The ultimate goal of this “multimodal” approach is to remove the cancer completely while preserving the best possible physical function [1][2].

The Goal: R0 Resection

In the world of sarcoma surgery, R0 resection (a microscopically negative margin) is the “gold standard.” This means that when the pathologist looks at the removed tissue, they find a “cuff” of healthy tissue surrounding the entire tumor [3].

Achieving an R0 margin is the single most important factor for preventing the cancer from returning in the same spot (local recurrence) [4][5]. To achieve this, surgeons often perform a “wide excision,” removing the tumor along with a layer of healthy muscle or fascia (the tough connective tissue covering muscles) which acts as a natural protective barrier [3][6].

Radiation: Preoperative vs. Postoperative

Radiation therapy uses high-energy beams to kill any microscopic cancer cells that might remain after surgery. For sarcomas in the arms or legs (extremities), doctors must decide whether to give radiation before surgery (preoperative) or after surgery (postoperative).

Timing Primary Benefits Primary Risks
Preoperative (Before) Often uses a lower dose and a smaller area. Linked to better long-term joint flexibility and less permanent tissue scarring (fibrosis) [7][8]. Higher risk of temporary wound healing problems immediately after surgery [9][10].
Postoperative (After) Surgery happens sooner, and there is a lower risk of initial wound complications [9]. Requires higher doses over a larger area. Linked to more long-term stiffness, swelling (lymphedema), and bone weakness [11][8].

Current guidelines often favor preoperative radiation because, while the wound healing issues are stressful, they are usually temporary, whereas the stiffness from postoperative radiation can be permanent [12][8].

Sarcomas in the Abdomen (Retroperitoneal)

Sarcomas that grow in the back of the abdomen (retroperitoneum) are treated differently. Because they sit near vital organs like the kidneys and intestines, radiation is more complex.

Recent studies on abdominal sarcomas have shown that radiation does not improve survival for all patients in a blanket manner [13][14]. However, radiation may still benefit specific subtypes, such as well-differentiated liposarcomas [15][16]. For these tumors, the main priority is a specialized surgery where the tumor is removed in one large “block” along with some surrounding fat or organs to ensure no cancer cells are left behind [17][18].

Rehabilitation and Physical Therapy

Surviving a “limb-sparing” surgery is a major victory, but it is only the first step. Because surgeons must remove muscle and tissue to achieve negative margins, you will experience weakness, stiffness, or changes in how your limb functions.

Physical therapy (PT) and rehabilitation are mandatory components of your recovery, not optional extras. Engaging with an oncology-specialized physical therapist will help you regain strength, prevent severe scar tissue buildup, and manage swelling (lymphedema). Talk to your surgeon about starting a rehab plan as soon as it is medically safe to do so.

Common questions in this guide

What does an R0 resection mean in sarcoma surgery?
An R0 resection means the tumor was completely removed with a microscopic 'cuff' of healthy tissue surrounding it. Achieving this negative margin is the most important factor in preventing the cancer from returning to the same area.
Should I have radiation therapy before or after my sarcoma surgery?
Preoperative radiation is often favored because it uses a lower dose and results in better long-term joint flexibility. However, it does carry a higher risk of temporary wound healing problems immediately following your surgery compared to postoperative radiation.
Is radiation used for retroperitoneal (abdominal) sarcomas?
Radiation therapy does not universally improve survival for sarcomas in the back of the abdomen. However, it may be recommended for specific subtypes, such as well-differentiated liposarcomas, alongside specialized block-removal surgery.
Will I need physical therapy after limb-sparing sarcoma surgery?
Yes, physical therapy is a mandatory part of recovery. Specialized oncology rehabilitation helps you regain strength, prevent severe scar tissue buildup, and manage swelling or lymphedema after muscle and tissue have been removed.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Why do you recommend preoperative (neoadjuvant) radiation rather than postoperative for my specific tumor?
  2. 2.What is the plan to manage potential wound healing issues if we do radiation before surgery?
  3. 3.How will the surgical team ensure an R0 margin while preserving as much physical function as possible?
  4. 4.Will my surgery involve a plastic surgeon for reconstruction to help with wound healing?
  5. 5.When should I begin working with a physical therapist to help regain movement in my limb?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (18)
  1. 1

    Adult Soft-Tissue Sarcomas of the Extremities.

    Bickels J, Malawer MM

    The Journal of bone and joint surgery. American volume 2022; (104(4)):379-389 doi:10.2106/JBJS.21.00196.

    PMID: 34780385
  2. 2

    SEOM Clinical Guideline of management of soft-tissue sarcoma (2020).

    de Juan Ferré A, Álvarez Álvarez R, Casado Herráez A, et al.

    Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico 2021; (23(5)):922-930 doi:10.1007/s12094-020-02534-0.

    PMID: 33405052
  3. 3

    [Localized soft tissue sarcomas].

    Hettler M, Jakob J

    Chirurgie (Heidelberg, Germany) 2025; (96(6)):524-534 doi:10.1007/s00104-025-02267-2.

    PMID: 40105939
  4. 4

    The Impact of Surgical Margin Distance on Local Recurrence and Survival in Patients with Soft Tissue Sarcoma.

    Yurtbay A, Aydın Şimşek Ş, Cengiz T, et al.

    Medicina (Kaunas, Lithuania) 2025; (61(2)) doi:10.3390/medicina61020289.

    PMID: 40005406
  5. 5

    [Soft tissue sarcomas: limb salvage using reconstructive plastic surgery techniques].

    Lehnhardt M, Sogorski A, Wallner C, et al.

    Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen 2019; (90(2)):94-101 doi:10.1007/s00104-018-0769-0.

    PMID: 30478483
  6. 6

    Surgical resection margin classifications for high-grade pleomorphic soft tissue sarcomas of the extremity or trunk: definitions of adequate resection margins and recommendations for sampling margins from primary resection specimens.

    Cates MM, Cates JMM

    Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc 2019; (32(10)):1421-1433 doi:10.1038/s41379-019-0278-9.

    PMID: 31053757
  7. 7

    Are We Ready for Life in the Fast Lane? A Critical Review of Preoperative Hypofractionated Radiotherapy for Localized Soft Tissue Sarcoma.

    Guadagnolo BA, Baldini EH

    Seminars in radiation oncology 2024; (34(2)):180-194 doi:10.1016/j.semradonc.2023.12.003.

    PMID: 38508783
  8. 8

    Soft tissue sarcoma and radiation therapy advances, impact on toxicity.

    El-Bared N, Wong P, Wang D

    Current treatment options in oncology 2015; (16(5)):19 doi:10.1007/s11864-015-0335-7.

    PMID: 25859829
  9. 9

    Postoperative complications and oncologic outcomes after multimodal therapy of localized high risk soft tissue sarcoma.

    Potkrajcic V, Kolbenschlag J, Sachsenmaier S, et al.

    Radiation oncology (London, England) 2022; (17(1)):210 doi:10.1186/s13014-022-02166-4.

    PMID: 36544149
  10. 10

    Assessment of local complications with preoperative versus postoperative radiotherapy in patients with soft tissue sarcoma in extremities: A randomized comparative clinical trial.

    Abdallah ZK, El Masry AM, Azmy SI, et al.

    Journal of orthopaedics 2024; (53()):34-40 doi:10.1016/j.jor.2024.02.042.

    PMID: 38464549
  11. 11

    Pre- or postoperative radiotherapy for soft tissue sarcomas.

    Llacer-Moscardo C, Terlizzi M, Bonvalot S, et al.

    Cancer radiotherapie : journal de la Societe francaise de radiotherapie oncologique 2020; (24(6-7)):501-512 doi:10.1016/j.canrad.2020.05.007.

    PMID: 32807685
  12. 12

    Radiation Therapy for Treatment of Soft Tissue Sarcoma in Adults: Executive Summary of an ASTRO Clinical Practice Guideline.

    Salerno KE, Alektiar KM, Baldini EH, et al.

    Practical radiation oncology 2021; (11(5)):339-351 doi:10.1016/j.prro.2021.04.005.

    PMID: 34326023
  13. 13

    Preoperative radiotherapy plus surgery versus surgery alone for patients with primary retroperitoneal sarcoma (EORTC-62092: STRASS): a multicentre, open-label, randomised, phase 3 trial.

    Bonvalot S, Gronchi A, Le Péchoux C, et al.

    The Lancet. Oncology 2020; (21(10)):1366-1377 doi:10.1016/S1470-2045(20)30446-0.

    PMID: 32941794
  14. 14

    Preoperative Radiotherapy in Patients With Primary Retroperitoneal Sarcoma: EORTC-62092 Trial (STRASS) Versus Off-trial (STREXIT) Results.

    Callegaro D, Raut CP, Ajayi T, et al.

    Annals of surgery 2023; (278(1)):127-134 doi:10.1097/SLA.0000000000005492.

    PMID: 35833413
  15. 15

    Neoadjuvant Therapy for Primary Resectable Retroperitoneal Sarcomas-Looking Forward.

    Istl AC, Gronchi A

    Cancers 2022; (14(7)) doi:10.3390/cancers14071831.

    PMID: 35406603
  16. 16

    Update on Dosing and Fractionation for Neoadjuvant Radiotherapy for Localized Soft Tissue Sarcoma.

    Roohani S, Wiltink LM, Kaul D, et al.

    Current treatment options in oncology 2024; (25(4)):543-555 doi:10.1007/s11864-024-01188-2.

    PMID: 38478330
  17. 17

    Does compartmental resection really impact retroperitoneal soft tissue sarcomas? A retrospective analysis from a Single Referral Center.

    Garcia-Ortega DY, Ortega Jiménez JA, Melendez-Fernandez AP, et al.

    Surgical oncology 2023; (51()):101997 doi:10.1016/j.suronc.2023.101997.

    PMID: 37832278
  18. 18

    The importance of surgical margins in retroperitoneal sarcoma.

    Kirane A, Crago AM

    Journal of surgical oncology 2016; (113(3)):270-6 doi:10.1002/jso.24135.

    PMID: 26707028

This page explains standard surgical and radiation treatments for soft tissue sarcoma for educational purposes. Always consult your surgical and radiation oncology teams to determine the safest and most effective treatment plan for your specific diagnosis.

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