Who Is a Candidate for Cytoreduction and HIPEC When Ovarian Cancer Has Spread Across the Peritoneum
When ovarian, tubal or primary peritoneal cancer has spread over the lining of the abdomen, cytoreductive surgery with HIPEC helps a chosen group, not everyone. She is a candidate when every visible deposit can be removed (CC-0), the disease has stayed inside the abdomen, she is fit for a long operation, and the operation falls at the right point in her treatment. Choosing her well, before the abdomen is opened, is the larger part of the treatment.
Send the CT images, the tumour markers and any biopsy or laparoscopy report ahead of your appointment, so the consultation starts with them already read · +91-63590-11009
Dr Swati Shah
MS, DrNB (Surgical Oncology)
HIPEC & Ovary Cancer Surgeon · Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad
Indian Ovary Cancer Institute (IOCI), Shah’s Gastro, Cancer & Robotic Surgery Centre. Trained at high-volume cancer centres, fully qualified in surgical oncology, and 18 years of experience in cancer surgery for women. Rated 5.0 from 18 Google reviews at the IOCI clinic and 4.95 from 56 at Apollo, Bhat.
When ovarian cancer becomes a disease of the peritoneum
The peritoneum is the thin lining of the abdomen and of the organs inside it. Ovarian, fallopian-tube and primary peritoneal cancer spread across this lining as a sheet of deposits, which is why surgery for them is surface surgery, region by region.
The deposits gather on the omentum (the fatty apron that hangs from the stomach and large bowel), under the diaphragm, on the coverings of the bowel and in the pelvis. A woman usually reaches us with a belly that has slowly grown, fluid that keeps coming back after it is drained, a thickened omentum on the scan, or bouts of partial bowel blockage.
Doctors often call this picture “peritoneal carcinomatosis”, as if it were one disease. It is not. Where the cancer started decides whether an operation and heated chemotherapy will help, and the evidence for one starting point cannot be borrowed for another. This page is about disease that started in the ovary, the tube or the peritoneum itself. If the spread began in the appendix, the bowel or the stomach, it is a different decision with different evidence.
The first question: is it cancer, and did it start in the ovary?
Before anyone talks about an operation, tissue is taken. In India, abdominal tuberculosis can copy every feature of peritoneal cancer, so the sample is tested for tuberculosis as well as examined for cancer.
Tuberculosis of the peritoneum produces fluid in the abdomen, a thickened omentum, small nodules on the lining and even a raised CA-125 — the same picture, on a scan, as ovarian cancer. Operating on tuberculosis as if it were cancer is a serious harm, and an avoidable one. So the biopsy, taken under scan guidance or at laparoscopy, goes for histology and also for the tuberculosis tests (an AFB smear, GeneXpert and culture). When fluid is drained, it is tested too.
The second check is where the disease began. Tumour markers are measured — CA-125, CEA and CA 19-9 — and a colonoscopy and an upper GI endoscopy are done when the pattern could point to the bowel or the stomach. A bowel or stomach cancer spread over the peritoneum is not treated as ovarian cancer.
Mapping the spread: the Peritoneal Cancer Index
The Peritoneal Cancer Index, or PCI, is a map. The abdomen is divided into regions, each region is scored by the size of its largest deposit, and the total tells the team how much disease there is and where it lies.
The map is built in steps. A contrast CT of the chest, abdomen and pelvis shows the distribution of disease, the small bowel and whether its mesentery (the fan of tissue that carries the bowel’s blood supply) is being pulled in. Where small deposits must be seen clearly, an MRI with diffusion imaging picks up more than CT. A PET-CT is used selectively, mainly to look for disease outside the abdomen.
The most accurate map is drawn at diagnostic laparoscopy — a camera passed through a small cut, under anaesthesia, to look directly at the lining region by region. Laparoscopy is used whenever the scans leave doubt about whether everything could be removed. The PCI is written into the operation note, so every later decision can refer back to it.
What CC-0 means, and why only a complete operation counts
CC-0 means no visible cancer was left anywhere at the end of the operation. The completeness-of-cytoreduction score is recorded for every operation, and only a complete or near-complete result is linked to a real benefit.
| Score at the end of surgery | What it means | What it does for her |
|---|---|---|
| CC-0 | No visible disease left anywhere | The aim of every operation |
| CC-1 | Only tiny nodules, no larger than 2.5 mm | Still counted as complete enough to help |
| CC-2 | Nodules between 2.5 mm and 2.5 cm left behind | The risks of a long operation without its benefit |
| CC-3 | Nodules larger than 2.5 cm left behind | The risks of a long operation without its benefit |
This is why the decision is made with such care. An incomplete cytoreduction gives a woman all the strain of a long operation and none of what it was meant to achieve. If complete removal cannot be reached, the operation should not be undertaken in that form.
Who is a candidate, and who is not
A woman is a candidate when the map shows disease that can be cleared completely, nothing has spread outside the abdomen, she can withstand a long operation, and the timing within her treatment is right.
| Points towards cytoreduction (with HIPEC where it applies) | Points away from it |
|---|---|
| Tissue confirms ovarian, tubal or primary peritoneal cancer, and tuberculosis has been excluded | Tuberculosis not yet excluded, or a bowel or stomach source not yet ruled out |
| Laparoscopy and scans show disease that can be removed completely | Extensive disease on the small bowel, or a mesentery pulled tight by tumour |
| Disease confined to the abdomen | Spread to the liver substance, the lungs or distant lymph nodes |
| Able to walk and look after herself, with heart, lungs and kidneys that can carry a long operation | Poor fitness, low albumin or weight loss that has not yet been corrected |
| Interval surgery after chemotherapy, where heated chemotherapy is planned | A first operation, where HIPEC is still being studied |
The small bowel: the finding that usually decides
Disease spread widely over the small bowel, or a mesentery pulled in by tumour, is what most often makes a complete operation impossible. It is looked for at laparoscopy, before the abdomen is opened.
Almost any other region can be cleared. The omentum is removed, the lining of the pelvis and of the abdominal wall is stripped, the diaphragm is stripped or partly removed, and a segment of large bowel can be taken. The small bowel is different. When its surface is coated along its length, removing enough of it to clear the disease would leave too little bowel to live well on.
So when laparoscopy shows this pattern, the abdomen is not opened for a cytoreduction. Chemotherapy is given, and the map is drawn again later. Stopping at that point is a decision made in her favour, and it is explained at the consent discussion so that it never comes as a surprise.
When HIPEC is used — and when it is not
For ovarian cancer, heated cisplatin inside the abdomen has trial support at interval surgery after chemotherapy, in advanced disease, when the cytoreduction is complete. At a first operation it is still being studied, and it is never added to an incomplete one.
HIPEC — hyperthermic intraperitoneal chemotherapy — bathes the inside of the abdomen with heated chemotherapy for a set time at the end of the operation. The heat helps the drug act on the surface layer of tissue. It reaches cancer cells too small to see; it cannot reach a nodule that was left behind. That one fact explains most of the rules.
- It is used at interval cytoreduction, after chemotherapy has been given first, in advanced ovarian cancer spread through the abdomen, once every visible deposit has been removed. The OVHIPEC-1 trial is the basis for this.
- It is not used when the cytoreduction is incomplete. It adds strain without benefit.
- It is not standard at a first, primary operation. If it is discussed in that setting, it is presented to you as investigational.
- It is not given when the kidneys or blood counts could not safely tolerate cisplatin, or when disease has spread outside the abdomen.
The evidence for HIPEC differs with where the cancer started, and it must not be generalised. What is true for ovarian disease at interval surgery is not automatically true for any other peritoneal cancer, which is one more reason the starting point is confirmed first.
What the operation involves
Cytoreduction is a set of operations chosen region by region to reach CC-0. Only the parts the map calls for are done, and every resection is recorded in the operation note alongside the PCI and the final CC score.
- The omentum: the greater and, where involved, the lesser omentum are removed; the spleen is removed when disease reaches its hilum.
- Peritonectomy: the lining is stripped from the pelvis, from either side of the abdominal wall and from under the diaphragm on either side, wherever it carries disease.
- The diaphragm: stripped, or removed in part and repaired where disease has grown into the muscle.
- Around the liver: the gallbladder is removed and the lining of the liver’s entrance and of the liver surface is stripped where involved.
- The bowel: segments are removed and joined where that makes the operation complete; a pelvic peritonectomy with removal of the rectum is done for heavy pelvic disease. A stoma may be needed.
- The womb, tubes and ovaries: removed in women where they are involved.
Dr Swati Shah leads the operation. Dr Harsh Shah, MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology), joins as the GI surgeon whenever the bowel or the upper abdomen needs to be cleared, so that completeness never depends on the range of one surgeon.
Inside the HIPEC phase
Once the cytoreduction is complete, cisplatin warmed to between 41 and 43 °C is circulated through the abdomen by a perfusion machine, with the kidneys protected and the anaesthesia team managing large shifts in fluid.
The heated-perfusion machine is available at Apollo Hospital, Bhat, and it is booked, with its perfusion team on standby, when the operation is listed. The perfusion may be run with the abdomen open or closed. During it, the anaesthetist actively cools the body, keeps the urine flowing and gives kidney protection according to the cisplatin protocol. Theatre staff follow a cytotoxic-handling protocol with closed-circuit scavenging, and a named perfusionist runs the machine.
Why depth in this one operation matters
In peritoneal surgery the selection is the treatment. Choosing well, at laparoscopy and at the tumour board, depends on a team that maps, clears and decides on this one operation again and again.
Three judgements carry most of the result: reading the laparoscopy correctly, knowing when the small bowel has put CC-0 out of reach, and being willing to stop rather than leave disease behind. None of them is a single surgeon’s skill. They belong to a team in which the gynaecological cancer surgeon, the GI surgeon, the anaesthetist, the intensive care unit, the perfusionist and the stoma nurse have all done this together before.
Volume here is not a number to advertise. It is the reason a team can say “not yet” with confidence. A unit that does this work should also check itself: its own PCI pattern, how often it reaches CC-0, how often it stops, and its major complications are recorded and reviewed, and your own figures are discussed with you at consent.
Preparing for the operation
This is one operation where the weeks before it genuinely change how a woman comes through it:
- A walking programme, breathing exercises and protein supplements from the first OPD visit, with a dietitian involved early.
- Anaemia corrected, albumin raised, sugar controlled, and smoking and alcohol stopped at least four weeks before.
- Bowel preparation with oral antibiotics, and the stoma site marked by the stoma nurse in every case.
- Blood and blood products planned in advance, and the intensive care bed booked before the date is fixed.
- Blood-thinning injections continued for 28 days after the operation.
Consent is taken over more than one visit, personally and in detail, and never on the day of surgery.
Recovery runs slower than after other operations
After cytoreduction with HIPEC, every patient goes to intensive care first. The bowel is slow to wake, nutrition starts early, and blood counts are watched daily because they fall in the second week.
A delay in the bowel starting to work is expected, not a complication, so nutrition — by mouth, by tube or into a vein — is planned from the first days. The blood count is checked every day: the chemotherapy given during HIPEC lowers the white cells, with the lowest point usually between the seventh and the tenth day, and any fever in that window is treated at once. Kidney function is followed in the same way.
She goes home when all of these are true: she is eating or settled on a nutrition plan, the bowel is working, the white count has passed its low point and is rising, there has been no fever for a day, pain is controlled by tablets, she is walking on her own, any stoma is in her own hands, and the kidneys are stable. Discharge usually falls in the second week, later if anything has needed treatment.
Complications, named in words
This operation carries more risk than most in abdominal surgery. Its complications are listed here in words; your own figures, which depend on your fitness and the extent of the operation, are given at the consent discussion.
They include bleeding needing transfusion, wound infection, clots in the leg or lung, heart or breathing problems, a leak where bowel is joined, a collection of pus inside the abdomen, a slow return of bowel function, a fall in white cells with a risk of serious infection, kidney injury from cisplatin, fluid around the lung after diaphragm surgery, a pancreatic or bile leak, a return to theatre, a stoma that may be temporary or permanent, a long hospital stay, and a risk to life. Later there can be a hernia at the wound, adhesions blocking the bowel, a change in bowel habit and tiredness that lasts for months.
Some things are certainties rather than risks: the operation may be stopped at laparoscopy or on opening if complete removal is not achievable; if the ovaries are removed, menopause is immediate and pregnancy is no longer possible; the cancer can return even after a complete operation; and follow-up is lifelong.
What patients and families say
★★★★★
“Dr. Swati Shah operated on my mother for CRS HIPEC. We are very thankful for her excellent treatment and compassionate care throughout the journey. She explained everything clearly and made us feel confident before the surgery. My mother is recovering well, and we are grateful for the successful outcome. Dr. Swati Shah is an excellent surgical oncologist. Highly recommended”
Rajesh Patel, August 2026
★★★★★
“My relative was treated for ovarian cancer at the Indian Ovarian Cancer Institute (IOCI). From the first consultation to surgery and postoperative care, the entire team was supportive and professional. The surgery was performed successfully, and every step of the treatment was explained clearly. We truly appreciated the compassionate care, prompt attention, and confidence the team gave us during a difficult time. We are grateful to IOCI for providing excellent ovarian cancer treatment and would highly recommend the institute to anyone seeking specialized ovarian cancer care.”
Bg Chaudhari, July 2026
★★★★★
“We are extremely grateful to Dr. Swati Shah for treating my mother for ovarian cancer and performing her surgery. She is a very experienced, compassionate, and dedicated doctor. She explained the treatment and surgery very patiently and gave us confidence throughout the entire journey. The surgery went well, and my mother is doing much better now. Thank you, Dr. Swati Shah, for your excellent care and support. Highly recommended for ovarian cancer treatment.”
Jay Udasi, September 2026
A patient of Dr Swati Shah’s speaks about her recovery after cytoreduction and HIPEC for ovarian cancer (in Hindi).
Your journey with us
- Book your consultation. The IOCI clinic at Gota, Ahmedabad. Bring the CT images themselves, the tumour markers, and any biopsy, fluid or operation reports.
- Tests and a written plan. Tissue confirmed and tuberculosis excluded, the source of the disease checked, the PCI mapped on scans and at laparoscopy, and the case decided at the tumour board.
- The surgery. Cytoreduction to CC-0 at Apollo Hospital, Bhat, with HIPEC when the setting supports it, and the GI surgeon present when the bowel or upper abdomen is involved.
- Intensive care, then the ward. A planned stay in intensive care, daily blood counts, early nutrition, and home usually in the second week.
- Follow-up and full healing. A review at two weeks to go through the histology and the CC score, chemotherapy as planned, then reviews every three months for two years with markers and scans.
Cost, insurance and admission
The estimate moves with how many regions need clearing, whether HIPEC is added, whether bowel is removed or a stoma made, and the days in intensive care. Cashless pre-authorisation is arranged through the Apollo Hospital, Bhat, insurance desk where your policy allows it.
Plan also for the diagnostic laparoscopy, the chemotherapy before or after surgery, and nutrition support during recovery. Bring your policy papers and every earlier scan and report to the first visit, so the pre-authorisation can be filed as soon as a date is set.
Frequently asked questions
My CT says "peritoneal deposits". Does that mean surgery is no longer possible?
No. Peritoneal spread is the usual way ovarian cancer advances, and many women with it are treated with cytoreduction. Whether it is possible for you depends on whether every deposit can be removed, which is judged on the scans and, when there is doubt, at diagnostic laparoscopy.
What is the PCI, and is a high score always bad news?
The PCI maps how much disease there is in each region of the abdomen. The number matters less than where the disease sits: disease that can be cleared completely, even when it is widespread, is a different situation from a smaller amount spread along the small bowel.
Why was I tested for tuberculosis when the doctor suspects cancer?
Because peritoneal tuberculosis looks almost the same as peritoneal cancer on a scan and can even raise CA-125. Testing the biopsy for both protects you from an operation planned for the wrong disease.
Is HIPEC given to every woman who has cytoreduction?
No. In ovarian cancer it has support at interval surgery after chemotherapy, when every visible deposit has been removed. It is still being studied at a first operation, and it is never added when cytoreduction is incomplete.
What happens if the laparoscopy shows the disease cannot all be removed?
The cytoreduction is not done at that sitting. Chemotherapy is given, and the disease is mapped again afterwards. An incomplete operation would carry all the risks with little of the benefit, so stopping is a decision made in your favour.
Who operates — a gynaecological cancer surgeon or a GI surgeon?
Both, when needed. Dr Swati Shah leads the operation, and Dr Harsh Shah joins as the GI surgeon whenever the bowel or the upper abdomen must be cleared to reach CC-0.
Where Dr Swati Shah sees and operates
IOCI clinic, Gota, Ahmedabad
Indian Ovary Cancer Institute I Ovary cyst & tumour treatmentSF-203, 2nd Floor, Olive Greens, Gota, S G Highway, Ahmedabad, Gujarat 382481
Apollo Hospital, Bhat
Dr Swati Shah Gynec Oncologist I Uterus, Cervix, Ovary Cancer I Robotic & CRS HIPECApollo Hospital International Limited, Plot No. 1 A, GIDC Bhat Industrial Estate, Bhat, Gandhinagar, Gujarat 382428
Consultation at the IOCI clinic, Gota, Ahmedabad. Surgery at Apollo Hospital, Bhat, Gandhinagar.
Related on this site
- Surgery for Ovarian Cancer — the main ovarian cancer surgery page
- Cytoreductive Surgery (CRS) for Ovarian Cancer
- HIPEC for Ovarian Cancer
- Advanced Ovarian Cancer
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