If I Have Surgery, Will the Cancer Spread Through My Body Faster?

One of the most frequently asked questions by patients diagnosed with cancer and their loved ones is:
“If I have surgery, will the cancer spread throughout my body?”
This questionis one of the biggest cancer myths that has been circulating in society for years and unnecessarily frightens patients.

In this article, I will explain in detail—in patient-friendly language—why this common misconception about cancer surgeryis incorrect, in which situations surgery can belife-saving, and the scientific facts behind it.

Where Does This Idea Come From?

The belief that “if a scalpel touches it, the cancer will spread”;

  • From times in the past when medical technology was inadequate
  • Misinterpretation of postoperative disease progression
  • From hearsay

is attributed to.

In modern oncology today, this beliefhas no scientific basis.

As Prof. Dr. Volkan İzoloften explains to his patients:

Cancer surgery does not spread cancer; on the contrary, it is performed to prevent its spread.

How Does Cancer Spread? (The Truth About Metastasis)

The spread of cancer (metastasis) is relatedto the tumor’s biological behavior, not to surgery.

The Main Ways Cancer Spreads

  • Through the bloodstream
  • Through the lymphatic system
  • Direct spread to adjacent tissues

These processes may often have begunlong before the surgery. In other words, the surgerydoes not trigger an existing spread.

Why Doesn't Surgery Cause Cancer to Spread?

Modern cancer surgery is based on certain fundamental principles:

  • Complete removal of the tumorous tissue
  • Leavinga safe surgical marginaround the cancerous tissue
  • Controlled removal of lymph nodes
  • Minimizing contact with the tumor

Surgeries performed according to these principles are plannedto preventthe spread of cancer cells.

What Happens If You Don't Have Surgery?

The real risk is oftenavoiding surgery.

For cancers that are not treated with surgery:

  • The tumor continues to grow
  • It spreads to surrounding organs
  • It spreads to the lymph nodes
  • The risk of distant organ metastasis increases

In particular, for urological cancers such as kidney, prostate, testicular, and bladder cancers,timely surgery canensure that the disease is completely brought under control.

Prof. Dr. Volkan İzol describes delaying surgery for early-stage cancers as “one of the most common but most costly mistakes.”

For Which Types of Cancer Is Surgery Life-Saving?

🔹 Prostate Cancer

Radical prostatectomy performed in the early stages can completely cure the patient of cancer.

🔹 Kidney Cancer

With partial or radical nephrectomy:

  • The cancerous tissue is removed
  • The remaining kidney can be preserved

🔹 Testicular Cancer

Removal of the testicle (orchiectomy) can often becurative on its own.

🔹 Bladder Cancer

Surgery for invasive muscle disease significantly prolongs life expectancy.

The “Cancer Progressed After Surgery” Misconception

In some patients, the progression of cancer after surgery leads to a misconception:

“See, I had surgery, and then it spread.”

The truth, however, is this:

  • Cancer cellsare already circulating in the bloodstream before surgery
  • Metastases that develop after surgeryare microscopic spread that was present beforehand
  • Modern imaging methods may not always detect these foci

In other words,it is not the surgery that is to blame, butthe biological aggressiveness of the cancer.

Can Surgery Spread Cancer? (Exceptional Cases)

Scientifically speaking:

  • When done with the right technique
  • Performed at experienced centers
  • Surgeries performed in accordance with oncological guidelines

It does not spread cancer.

However:

  • Inappropriate surgical techniques
  • Disruption of tumor integrity
  • Failure to adhere to oncological principles

It could theoretically pose a risk. For this reason,the choice of surgeon and facility is of vital importance.

The Advantages of Modern Surgery

Today:

  • Robotic surgery
  • Laparoscopic techniques
  • Minimally invasive techniques

thanks to:

  • Contact with the tumor is reduced
  • Bleeding and complications decrease
  • The recovery time is shorter

In Prof. Dr. Volkan İzol’sapproach, the goal is not merely to remove the tumor, but to achieveoncologicalsuccesswhile preserving the patient’s quality of life.

Does Surgery + Other Treatments Control Cancer Better?

Yes.

In some cancers:

  • Surgery + chemotherapy
  • Surgery + radiation therapy
  • Surgery + immunotherapy

These combinations are applied.

This does not mean that the cancer has spread; it means thatit is better controlled.

Frequently Asked Questions by Patients

❓ Do cancer cells spread during surgery?

➡️ No. Oncologic surgery is planned to prevent this from happening.

❓ Would it be safer if I didn’t have the surgery?

➡️ In most cancers, however, the risk actually increases.

❓ Should every cancer be treated with surgery?

➡️ No. In some advanced stages, systemic treatments are preferred over surgery. The decisionis made on a case-by-case basis.

How Should the Decision to Undergo Surgery Be Made?

  • Stage of cancer
  • The patient's age
  • General health status
  • Biological characteristics of the tumor

should be evaluated together.

For this reason, decisions should be basedon expert opinion, not on “one-sentence” online comments.

Conclusion: Surgery Does Not Spread Cancer, but Delaying It Might

The most important fact about cancer surgery is this:

It is not the surgery that spreads cancer, but the delay in surgery.

Surgery performed at the right time, on the right patient, at the right centeris one of the most powerful tools for controlling cancer.

As Prof. Dr. Volkan İzolhas emphasized, the goal in cancer treatmentis to act based on science, not fear.