Medical Oncologist
CION Cancer Clinics
Who is eligible for HIPEC, and what the team weighs | CION Cancer Clinics
You are usually considered for HIPEC when the cancer has spread to the lining of the abdomen but nowhere else, when scans suggest a surgeon can remove nearly all of it, and when you are fit enough for a very long operation and a slow recovery. The type of cancer matters too. This page explains what a specialist team weighs, how the checks are done, and what the words on your report mean. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MI
Medically reviewed by Dr. Mohammed ImaduddinConsultant Surgical Oncologist · MBBS, MS (General Surgery), MCh (Surgical Oncology) · last reviewed September 2026, next review due September 2027
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The short answer
Who is usually considered for HIPEC?
HIPEC is considered when cancer has spread to the peritoneum, the thin lining that covers the inside of the abdomen and its organs, but nowhere else. That is the first test. The second is whether a surgeon can remove nearly all of the visible cancer. The third is whether you are fit enough for a very long operation.
Why the lining is treated differently
Cancer on the lining tends to sit on surfaces rather than grow deep into them. That is what makes it possible, in the right person, to strip it away and then wash the abdomen with heated chemotherapy to reach cells too small to see.
The three questions every team asks
Can the cancer be removed almost completely? Is it a type that responds to this approach? Is the person strong enough for an operation that lasts most of a day, and the weeks of recovery after it? A yes to all three is what "eligible" means. A no to any one of them is usually a no to the operation, whatever the scan looks like.
If you have been told the cancer is "in the peritoneum" and nobody has mentioned this operation, it is reasonable to ask whether you have been assessed for it, and why or why not.The criteria
What does the team actually weigh?
The type of cancer
Some cancers respond well to this approach and some do not. Pseudomyxoma peritonei, tumours of the appendix, peritoneal mesothelioma and selected colorectal and ovarian cancers are the usual ones. Stomach and pancreatic cancers with peritoneal spread are considered far more cautiously, and often not at all.
How much cancer there is
Surgeons score the amount of cancer on the lining using the Peritoneal Cancer Index, counted region by region. There is no single cut-off for every cancer, but a very high score usually means the surgeon cannot clear it, and the operation is then not offered.
Whether it has spread beyond the abdomen
If scans show cancer in the liver, lungs or bones, or in lymph nodes far from the abdomen, HIPEC is not usually offered, because treating the lining alone would leave the rest untreated. A small amount of liver disease alongside colorectal spread is sometimes an exception.
Your general fitness
This is a long operation and a hard recovery. Your heart, lungs and kidneys are tested, your weight and nutrition are checked, and you are asked how far you can walk. Age on its own is not a cut-off. What matters is how your body will cope.
Not sure whether this applies to you?
Ask an oncologistThe work-up
How is eligibility actually checked?
Scans of the whole body
Usually a CT scan of the chest, abdomen and pelvis, and sometimes a PET-CT or MRI. The team is looking for two things: how much cancer sits on the lining, and whether any has spread beyond the abdomen.
Blood tests and fitness checks
Blood counts, kidney and liver function, tumour markers, and tests of the heart and lungs. A dietitian may see you, because poor nutrition before surgery makes recovery much harder.
Sometimes a keyhole look
Scans under-count small deposits on the lining. A short keyhole operation, called a diagnostic laparoscopy, lets the surgeon see the abdomen directly and score it before committing to the big operation.
The tumour board
Your case is discussed by surgical, medical and radiation oncologists together. They decide whether to offer the operation, offer chemotherapy first, or advise against it.
The conversation with you
You are told what was found, what is recommended and why, and what the alternatives are. Bring the family member who will help you decide.
On your report
Words you will meet, in plain language
- Peritoneal carcinomatosis
- Cancer that has spread to the lining of the abdomen. It describes where the cancer is, not what type it is.
- PCI
- The Peritoneal Cancer Index. A score for how much cancer sits on the lining, built up region by region. Lower is more favourable.
- Cytoreduction
- The surgical half of the treatment: removing every visible deposit of cancer, along with any lining or organ it has grown into.
- Extra-peritoneal disease
- Cancer outside the abdominal cavity, such as in the lungs or bones. Its presence usually rules HIPEC out.
- Performance status
- A simple score for how active you are day to day. It is a strong sign of how well you will cope with major surgery.
- Diagnostic laparoscopy
- A keyhole operation done only to look, so the surgeon can score the abdomen before deciding on the full operation.
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Commonly believed
Four things families tell us, and what is actually true
"Stage 4 means no surgery is possible."
Peritoneal spread is usually recorded as stage 4, and for many cancers that does mean surgery is not the answer. HIPEC is the exception. For the right cancer type, spread confined to the lining is exactly what this operation was designed for.
"The scan was clear, so the lining must be clear."
Scans miss small deposits on the lining more often than people expect. That is why a keyhole look is sometimes done before the main operation, and why the surgeon's own count in the operating theatre is the score that matters.
"She is too old for something this big."
Age alone is not the test. A fit person in their seventies who walks every day may cope better than a much younger person who is frail or badly nourished. The fitness checks exist to answer this properly rather than by guesswork.
"They gave chemotherapy first, so they have given up on surgery."
Often the opposite. Chemotherapy before surgery is used to shrink disease, to see how the cancer behaves, and to make a later operation more likely to clear everything. Ask whether surgery is still planned afterwards.
Did you know
Every case at CION is discussed at a tumour board, with surgical, medical and radiation oncologists in the same room, before a plan is confirmed. It is never one doctor's opinion.
Being straight with you
What if you are told you are not eligible?
There are two kinds of no, and it matters which one you have been given. A firm no means the cancer type, or spread beyond the abdomen, makes the operation unlikely to help. A not-now means something could change, such as a response to chemotherapy or an improvement in nutrition and fitness.
Questions worth asking
Ask which of the criteria you did not meet, and whether it could change. Ask whether there are other ways to treat cancer on the lining, such as chemotherapy given into the abdomen as a fine mist, called PIPAC, or standard chemotherapy through a vein. Ask what the aim of treatment now is.
A second opinion is normal
Cancer on the peritoneum is uncommon and the surgery is done in only a few centres. Asking for a second opinion from a team that does it regularly is not an insult to your first doctor. Take every scan and report with you.
This page cannot tell you whether HIPEC is right for you. If you would like help understanding what you have been told, call the helpline and an oncologist will go through it with you.Questions we are asked
Common questions about who can have HIPEC
Is there an age limit for HIPEC?
There is no fixed age cut-off. What the team looks at is fitness: how your heart, lungs and kidneys are working, how much weight you have lost, and how active you are day to day. Older people who are fit are considered. Younger people who are frail may not be.
My father has stomach cancer that has spread to the lining. Can he have it?
Stomach cancer with peritoneal spread is where teams are most cautious, because results so far have been mixed and the operation is hard. Some centres offer it in carefully selected people with very little disease. Ask directly whether his case has been reviewed for it.
What PCI score is too high?
It depends on the cancer. For pseudomyxoma and some appendix tumours, a high score can still be operable, because the disease is slow-growing. For colorectal spread, teams usually want a lower score. Rather than asking for a number, ask your surgeon whether they expect to clear everything, because that is what the score is for.
Do I have to have chemotherapy before the operation?
Sometimes. For colorectal and gastric spread it is common to give chemotherapy first, then re-scan and decide. For pseudomyxoma it is often not needed. If chemotherapy comes first, ask whether the operation is still planned afterwards.
Can I be assessed if I have fluid in my abdomen?
Yes. Fluid in the abdomen, called ascites, is common with peritoneal spread and does not by itself rule you out. It can make the amount of disease harder to judge on a scan, which is one reason a keyhole look may be suggested.
Why does the surgeon want to look inside before deciding?
Because scans under-count small deposits on the lining, and the decision rests on how much there is and where. A short keyhole operation lets the surgeon see and score the abdomen directly, and can save you from a very long operation that would not have cleared the disease.
If one centre says no, will another say yes?
Sometimes, because centres differ in experience and in how much disease they are willing to take on. A second opinion from a team that does this operation regularly is sensible. Be cautious of any centre that says yes without looking at your scans.
Will Aarogyasri or my insurance cover the assessment?
The scans and tests are usually covered when they are part of an approved cancer treatment plan. Aarogyasri, CGHS, ECHS and EHS are accepted, and most cashless insurers are empanelled. Cover for the operation itself varies by scheme. Call the helpline with your card details and we will check before you travel.
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MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
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Dr. Vinay Mamidala
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Dr. Vajja Sandeep Kumar
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Sources
- National Cancer Institute — HIPEC (NCI Dictionary of Cancer Terms)
- NICE — Cytoreduction surgery followed by hyperthermic intraoperative peritoneal chemotherapy for peritoneal carcinomatosis (IPG331)
- Cancer Research UK — Pseudomyxoma peritonei
- Macmillan Cancer Support — Surgery for cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Who Should Not Have HIPECThe other side of the same decisionThe Peritoneal Cancer Index (PCI) ExplainedThe score that sits at the centre of eligibilityWhich Cancers Are Treated With HIPECWhether your cancer type is one of themFitness, Tests and PrehabilitationHow fitness for surgery is checked and improvedHIPEC and Peritoneal Surface SurgeryEvery page in this guide
Talk to us
Been told the cancer is on the lining of the abdomen?
Send us the scan and biopsy reports, or call the helpline. An oncologist will tell you whether an assessment for this operation makes sense and what to ask your centre. One helpline serves every CION centre.