Original Article: Springer Nature Link – March 21, 2026
When you’re facing cytoreductive surgery for appendix cancer, one phrase carries enormous weight:
“We got it all.”
It’s what every patient hopes to hear.
It’s what every surgeon aims to achieve.
But a new study published in Annals of Surgical Oncology (Springer Nature Link article above) raises an uncomfortable and important question:
What if “getting it all” isn’t always possible… even for the best surgeons?
The “Invisible Gorilla” in the Operating Room
This study looked at patients with peritoneal metastases from colorectal and ovarian cancers…conditions treated with the same type of surgery used in appendix cancer: cytoreductive surgery (CRS).
After a highly experienced surgeon completed a “perfect” surgery (what’s called a CC0 resection – meaning no visible disease), something unusual happened:
A second experienced surgeon immediately went back in and looked again.
What They Discovered
After “complete” cancer surgery:
- 88% had additional tumors found
- 47% had confirmed missed cancer
Nearly half of patients still had cancer left behind…even after “complete” surgery. Now I know why multiple doctors told my husband that with or without 6 months of Folfox every two weeks, there was still a 50/50 chance it would recur.
Even in a controlled setting, with expert surgeons and high attention levels, cancer is being missed.
Why This Happens (And Why It Matters to You)
The study refers to something called the “Invisible Gorilla Effect.”
It comes from a famous psychology experiment where people miss obvious things right in front of them…simply because their brain is focused elsewhere.
That same concept applies in surgery.
During CRS:
- Surgeons are scanning the entire abdominal cavity
- Looking for tiny, often flat or translucent tumors
- Making hundreds of decisions under physical and cognitive fatigue
Even the best surgeons are still human…
What This Means for Appendix Cancer Patients
This study didn’t include appendix cancer patients, but it absolutely applies.
Appendix Cancer:
- Spreads across the same peritoneal surfaces
- Requires the same surgical precision
- Involves the same challenge of detecting microscopic or subtle disease
The takeaway is not fear – it’s awareness
This doesn’t mean your surgeon did something wrong.
It means:
The limits of human perception are real….even in world-class surgery.
Should Every Surgery Have a “Second Look”?
This study suggests something worth considering:
A systematic second inspection during surgery could improve outcomes.
That could mean:
- A second surgeon reviewing the abdomen
- More structured inspection protocols
- Future use of imaging or AI-assisted detection
This isn’t standard practice today, but research like this is pushing the field forward. Also, if you don’t ask, you don’t receive. I certainly will.
What Questions Should Patients Ask?
If you or your loved one is preparing for CRS, this study gives you a new lens for conversations:
- How do you ensure nothing is missed during surgery?
- Do you use a standardized inspection process?
- How do you handle areas that are difficult to visualize?
- What does “complete cytoreduction” mean in your hands?
- MOST IMPORTANT: Can you have someone take a second look? Then show them this blog and the article written by the credible people.
These aren’t confrontational questions – these are now informed ones (with receipts – stealing this phrase from the news channels ;-).
This study doesn’t change the importance of cytoreductive surgery.
The Bottom Line
This reinforces the benefits of CRS. We’ve known for a long time this is critical for survival.
It also reminds us of something critical:
“No visible disease” does not always mean “no disease.”
And as patients and caregivers, understanding that nuance helps us:
- Ask better questions
- Make more informed decisions
- And advocate for continued innovation in care
And if you do nothing else – share this and ALL research with your medical team.
I recently shared something with my husband’s team that they hadn’t seen before. That might surprise people, but it shouldn’t. Even appendix cancer specialists don’t have visibility into every new study.
A strong medical team will appreciate it when you bring them information that could help guide decisions.
Always remember:
We are the “customers“
And if we can help our “vendor” do a better job, that ultimately benefits us.
That said, pay attention to how your team responds….
If they dismiss credible research without discussion, that’s a red flag.
We’ve walked away from three specialists who ignored data from another expert that directly contradicted their recommendations….and they couldn’t provide evidence to support their own.
You deserve a team that:
- Listens
- Evaluates new information
- And is willing to adjust based on evidence
Anything less is not good enough…
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