What does positive surgical margins mean for Endometrial Cancer

Endometrial CancerMay 19, 2026Navis AI

For informational purposes only

This answer was generated by AI grounded in NCCN guidelines and published medical literature. It is not medical advice. Always consult your oncologist or care team before making treatment decisions.

Understanding Positive Surgical Margins in Endometrial Cancer

Great question—this is an important finding that affects your treatment plan. Let me break down what this means.

What Are Surgical Margins?

When a surgeon removes your uterus and surrounding tissue for endometrial cancer, they cut through healthy tissue around the tumor. The margin is the edge of that removed tissue. Doctors examine these edges under a microscope to see if cancer cells are present at the cut surface.

  • Negative margins = No cancer cells at the edges (the goal)
  • Positive margins = Cancer cells ARE present at the cut edge

Why This Matters

Positive margins suggest that cancer cells may have been left behind in your body because the surgeon couldn't remove all the cancer while still preserving important structures. This increases the risk that the cancer could grow back in that area.

How Doctors Typically Respond

According to NCCN Guidelines for Uterine Neoplasms, positive margins generally lead to:

  1. Additional radiation therapy (most common approach)

    • Vaginal brachytherapy (internal radiation) and/or external beam radiation
    • Designed to kill any remaining cancer cells in the area
  2. Possible chemotherapy (depending on other factors like stage and grade)

  3. More frequent follow-up monitoring to catch any recurrence early

Important Context

Your specific treatment will depend on several factors your oncologist considers together:

  • The grade and stage of your cancer
  • Whether cancer was found in lymph nodes
  • Your overall health and ability to tolerate treatment
  • Other biomarkers or pathology findings

Questions to Ask Your Oncologist

  1. Why were my margins positive? (Was it the location, size, or aggressiveness of the tumor?)
  2. What additional treatment do you recommend? (Radiation, chemotherapy, or both?)
  3. How will this change my follow-up care and monitoring schedule?
  4. What are the side effects I should expect from the recommended treatment?
  5. How does this affect my long-term outlook?

Next Steps

Your pathology report should include details about where the positive margins were found and how much cancer was at the edge—these details help your oncologist decide the best next treatment. Make sure to discuss the complete pathology report with your care team.

This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.

This is general information.

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