The short answer
Laparoscopic and robotic-assisted surgery use small incisions and a camera instead of one large cut, often meaning less pain and a faster recovery than open surgery. But the FDA has warned that robotic devices are not specifically approved for cancer surgery, and one major trial found worse outcomes with minimally invasive surgery for cervical cancer — so this needs a direct conversation with your surgeon.
Laparoscopic surgery uses several small incisions, a thin camera, and long instruments instead of one large open incision.
Robotic-assisted surgery is a form of minimally invasive surgery where the surgeon controls robotic arms from a console, still through small incisions.
Minimally invasive approaches can mean less blood loss, less pain, and a shorter hospital stay compared to open surgery for many procedures.
The FDA has not granted marketing authorization for any robotically-assisted surgical device specifically for cancer treatment or mastectomy, and has raised concerns about outcomes data.
Choose how you want to understand this
The full explanation.
Two routes into the same operation
Open cancer surgery uses one long cut, so the surgeon can look straight into the body and work with gloved hands inside it.
Minimally invasive surgery uses a few small cuts instead. A long, thin tube with a tiny camera goes in through one cut. That tube is a laparoscope. It sends a picture from inside the body to a monitor. Thin tools go in through the other cuts to remove the tumor and a rim of healthy tissue.
In laparoscopic surgery, the surgeon stands at the table and holds those tools by hand.
In robotic-assisted surgery, the surgeon sits at a console a few feet away. The FDA calls these machines RAS devices, short for robotically-assisted surgical devices. The console is the control center. It gives a 3-D view and moves the instruments. A bedside cart holds the camera and three or four hinged arms. A separate cart holds the support gear. That means an electrosurgical unit, which cuts and seals tissue with electric current, plus suction and irrigation pumps and the light source.
The tools themselves are ordinary — scalpels, forceps, graspers, dissectors, scissors, retractors — just mounted on arms.
The FDA is blunt about what the word "robot" hides. The device is not really a robot. It cannot perform surgery without direct human control, so a person is driving it the whole time.
Clearance covers 30 days
The FDA has cleared RAS devices for laparoscopic work in seven fields. General surgery, heart surgery, colorectal surgery, gynecology, head and neck surgery, chest surgery, and urology. Gallbladder removal, hysterectomy, and prostatectomy are the common jobs. Prostatectomy means removal of the prostate.
Here is the part that surprises people. Those clearances rest on 30 days of patient follow-up. That is long enough to catch bleeding, infection, a leak, or injury to a nearby organ. It is far too short to show whether a cancer comes back.
So the FDA says something sharper. It has not granted marketing authorization for any RAS device in the United States specifically for preventing or treating cancer. Safety judged by cancer outcomes has not been established. Those outcomes are overall survival, recurrence, and disease-free survival.
Mastectomy gets its own warning. No RAS device is authorized for removing a breast. The FDA notes the approach differs from the conventional one.
None of that is a ban. The FDA regulates devices, not the practice of medicine. Surgeons may use a cleared device on a person with cancer, and they do, every day. It does mean the long-term answer has to come from trials rather than from the clearance paperwork. For three cancers, those trials exist. They do not all say the same thing.
Colon cancer: the small cuts held up
One trial randomly assigned 872 people to laparoscopic-assisted colectomy or open colectomy. It ran as NCCTG-934653, listed as NCT00002575. Median follow-up was 4.4 years.
Recurrence at 3 years was 16% with laparoscopy and 18% with open surgery, and three-year overall survival was 86% and 85%. Cancer coming back in the incision itself was an early worry. It happened in under 1% of both groups. Hospital stay was shorter with laparoscopy. Quality-of-life gains were real but small and brief.
That is the pattern people expect. Same cancer result, easier recovery.
Uterine cancer: recovery gained, survival matched
The LAP2 trial enrolled 2,616 people with clinical stage I to IIA uterine cancer. It split them 2 to 1. One group had full surgical staging by laparoscopy, the other by open surgery.
Recurrence at 3 years was 11.39% with laparoscopy and 10.24% with open surgery. That is a gap of 1.14 percentage points. Five-year overall survival was 89.8% in both arms. Formal noninferiority was not declared, but only because both groups recurred less often than the trial had planned for.
Laparoscopy takes longer in the operating room. It also means less pain, a shorter stay, and a faster return to normal life. In one trial, most of that gain had faded by 6 months. For early uterine cancer, laparoscopy is now favored over open surgery.
Cervical cancer: the trial that reversed practice
Then there is LACC. The full name is the Laparoscopic Approach to Cervical Cancer trial, NCT00614211. It enrolled 631 people. Eligible stages were IA1 with lymphovascular invasion, IA2, and IB1. Eligible cell types were squamous cell, adenocarcinoma, and adenosquamous carcinoma. Of those assigned to minimally invasive radical hysterectomy, 84.4% had laparoscopy. The other 15.6% had robot-assisted surgery.
The trial was built to show the small-cut route was no worse. It showed the opposite.
Disease-free survival at 4.5 years was 86.0% with minimally invasive surgery and 96.5% with open surgery. The hazard ratio for recurrence or death from cervical cancer was 3.74. The final analysis came out in 2024. It put 4.5-year disease-free survival at 85.0% versus 96%. Overall survival at 4.5 years was 90.6% versus 96.2%. The hazard ratio for death was 2.71. The authors wrote that an open approach should be the standard of care.
The FDA describes this evidence carefully. It notes limited reports of lower long-term survival with the minimally invasive route, laparoscopic or robotic. It also notes other reports finding no significant difference. What is not in dispute is the effect on practice. Radical hysterectomy for early cervical cancer moved back toward an open incision at many centers. Our page on cervical cancer treatment questions covers the rest of that decision.
What trades off either way
Operating time runs longer with small cuts in the gynecologic trials. An operation can also start small and convert to an open incision partway through. Bleeding, scar tissue, or a tumor bigger than the scans showed can force that switch, which is a judgment call rather than a failure.
Training matters more than the machine. The FDA does not supervise or accredit surgeon training on these devices. That falls to manufacturers, hospitals, and physicians. Models also differ from each other. The FDA warns that users need training on each specific model.
Most malfunction reports the FDA gets are mundane: component breakage, mechanical problems, image or display trouble. Usually no one is hurt. But reports of injuries and deaths do arrive. The agency cautions that such reports can be incomplete or unverified.
Questions that change the answer
The useful conversation is narrow. How many of this exact operation has this surgeon done by each route in the past year? What does the randomized evidence show for this cancer at this stage? Colon, uterine, and cervical give three different answers. What is the plan if the case has to convert to open? Would the number of lymph nodes removed, or the surgical margin, differ by route?
For a wider comparison, see open versus minimally invasive surgery. For the weeks afterward, see recovering from cancer surgery.
Sources
- FDA — Computer-Assisted Surgical Systems
- NCI — Surgery to Treat Cancer
- NCI PDQ — Colon Cancer Treatment, health professional version
- NCI PDQ — Endometrial Cancer Treatment, health professional version
- NCI PDQ — Cervical Cancer Treatment, health professional version
- PubMed — LACC trial, first report, PMID 30380365
- PubMed — LACC trial, final overall survival, PMID 38810208
Words to know
Tap any term to see what it means.
Common questions
What's the difference between laparoscopic and robotic surgery?
Both are minimally invasive approaches that use several small incisions instead of one large one. In laparoscopic surgery, the surgeon directly holds and moves long, thin instruments and a camera through those incisions. In robotic-assisted surgery, the surgeon sits at a console and controls robotic arms that hold the instruments and camera, which can offer more precise, magnified movement, though a member of the surgical team is still at the bedside throughout.
Is minimally invasive surgery always better than open surgery?
Not always. Minimally invasive approaches are often associated with less blood loss, less pain, and a shorter hospital stay for many procedures. But 'better' depends on the specific cancer, its size and location, and whether the surgeon can achieve the same complete removal of cancer through a minimally invasive approach as through open surgery. For some cancers and situations, open surgery remains the standard, safer choice.
What did the FDA say about robotic surgery for cancer?
In 2019, the FDA issued a safety communication noting it has not granted marketing authorization for any robotically-assisted surgical device specifically for use in mastectomy or the treatment or prevention of cancer, and it raised concerns after a study suggested potentially worse long-term survival with a minimally invasive approach compared to open surgery for cervical cancer hysterectomy. The FDA recommends discussing the benefits, risks, and alternatives with your surgeon before choosing this approach, and asking about your surgeon's specific training and experience with the technique.
Does this mean I shouldn't have robotic surgery?
Not necessarily — robotic and laparoscopic surgery remain standard, well-established options for many types of cancer surgery, and can offer real recovery benefits. The FDA's caution is specifically about not assuming these approaches are equivalent to open surgery for every cancer without a direct conversation, and about the clear evidence problem found for cervical cancer specifically. Ask your surgeon what the evidence shows for your specific cancer and situation.
What should I ask my surgeon before choosing an approach?
Ask how many of these specific procedures they've performed using each approach, what the evidence shows for your particular cancer type and stage, and what the recovery differences would likely be for you. A surgeon experienced in both approaches can give you an honest comparison based on your situation, not a general preference.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
Tap a question to save it to your list (kept on this device).
Speak With Trained Specialists & Human Navigators
Cancer Explained provides educational guidance, but does not replace trained specialists, social workers, or your medical team.
Talk to a trained cancer information specialist
Free, confidential assistance from NCI Cancer Information Service via phone, chat, or email.
Contact your oncology team
Locate after-hours contact numbers, portal messages, or urgent triage phone lines.
Find a patient navigator
Get one-on-one help with appointments, logistics, translation, and care coordination.
Find a genetic counselor
Discuss inherited mutation risk, family history, and genetic testing options.
Find an oncology social worker
Access emotional counseling, family support groups, and mental health resources.
Find a financial navigator
Locate copay assistance foundations, grant programs, and lodging/travel support.
Find a clinical-trial specialist
Search matching studies and speak with NCI trial information specialists.
Get urgent help
Immediate emergency guidance for fever (>100.4°F during chemo), severe pain, or shortness of breath.
Help Us Improve This Guide
Did this explanation answer your question and help you determine your next step?
Know someone who needs this?
Plenty of people are looking for something like this and do not know where to start. If this would help a friend or someone you love, send it on — we have written an opening line so you do not have to stare at an empty message. You can change every word of it.
Your message is written and sent in your own email or messaging app — we never see who you send it to, and nothing is added to any list.
Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Last updated: 2026-08-11Next planned review: 2027-02-03
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status — Source checked. This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
General education — varies by person. Answers genuinely differ between people. This page explains what commonly varies and points you to your care team for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
Read more about our editorial process, our use of AI, and our corrections policy.
Spotted a problem? Report an error — a factual mistake, broken or outdated source, confusing wording, or anything that seems unsafe. Please do not include names, medical record numbers, dates of birth, addresses, or other identifying medical information in your report.
After using this page, do you understand what to do next?
Anonymous — we only record the answer, never who gave it.
Related articles
Still have questions?
Educational answers, plain language
Free to print and share