30+ years of experience
500+ CRS+HIPEC procedures
International multidisciplinary committee
Reviewed by Dr. Juan José Torrent · Updated: April 30, 2026
Specialized Unit

Surgery for Ovarian Carcinomatosis

At Quenet-Torrent Institute, we have a specialized unit for the surgical approach to peritoneal carcinomatosis, an advanced form of tumor dissemination. We combine cytoreductive surgery, with or without HIPEC, in a multidisciplinary environment with high-complexity technology.

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Clinical summary

Peritoneal carcinomatosis from ovarian cancer is treated with complete cytoreductive surgery and HIPEC, with 5-year survival rates above 50% in selected patients. At Quenet-Torrent Institute (Barcelona · Madrid), the team of Dr. Quenet, Dr. Torrent and Prof. González Bayón performs primary, interval and salvage cytoreductive surgery according to stage.

What is ovarian carcinomatosis?

Ovarian carcinomatosis occurs when tumor cells spread through the peritoneum, the membrane that lines the abdominal cavity and its organs. This dissemination can originate from different types of cancer, the most frequent being colorectal, gastric, ovarian, peritoneal mesothelioma, and appendicular tumors such as pseudomyxoma peritonei.

It is an advanced condition, although not necessarily terminal. Advances in oncological surgery have made it possible to offer real treatment alternatives with curative intent, particularly when associated with the HIPEC technique in cases of pseudomyxoma peritonei, peritoneal mesothelioma, and ovarian cancer.

Symptoms of peritoneal carcinomatosis of ovarian origin

Peritoneal dissemination of ovarian cancer typically presents in an insidious manner. The most frequent symptoms are progressive abdominal distension and accumulation of fluid in the peritoneal cavity (ascites), together with diffuse pelvic or abdominal pain, early satiety, loss of appetite, and unintentional weight loss.

As the disease progresses, changes in bowel habits may appear, along with a sensation of pressure on the bladder or urinary alterations due to compression of adjacent structures, and severe fatigue. Because these symptoms are non-specific and can be confused with benign digestive or gynaecological conditions, diagnosis is frequently established at advanced stages. In any woman presenting with a combination of abdominal distension and ascites, particularly in the postmenopausal period, an urgent oncological assessment is essential.

Causes and risk factors of peritoneal carcinomatosis of ovarian origin

Peritoneal carcinomatosis of ovarian origin is a direct consequence of the progression of epithelial ovarian carcinoma, particularly the high-grade serous subtype, which tends to disseminate by direct seeding onto peritoneal surfaces from early stages. This mode of spread is the most characteristic of ovarian cancer and explains why peritoneal involvement is already present in approximately 75% of cases at the time of diagnosis.

The main risk factors associated with the underlying ovarian cancer include advanced age and postmenopausal status, the presence of germline mutations in the BRCA1 or BRCA2 genes, Lynch syndrome and other hereditary colorectal cancer syndromes, a family history of ovarian or breast cancer, pelvic endometriosis, and certain hormonal factors such as nulliparity or prolonged hormone replacement therapy. Identifying these factors allows for targeted genetic counselling and surveillance in women at elevated risk.

Why request a second opinion for ovarian carcinomatosis?

Requesting a second medical opinion is not a sign of distrust, but a responsible attitude towards a complex diagnosis.

Confirm viability

Confirm whether the combination of cytoreductive surgery and HIPEC is a viable alternative.

Compare options

Compare options when initially only palliative treatment has been proposed.

Evaluate experience

Evaluate the experience and results of the proposed center.

Updated treatment

Ensure you are receiving the most up-to-date and effective treatment available.

In pathologies like ovarian carcinomatosis, time is a crucial factor, but so is making informed and well-founded decisions.

How is ovarian carcinomatosis treated?

The most effective treatment for this pathology is cytoreductive surgery, which seeks to eliminate all visible macroscopic disease, sometimes followed by HIPEC, a heated chemotherapy perfusion directly into the abdominal cavity.

Single surgical procedure

It is performed in a single surgical procedure, under general anesthesia.

Localized chemotherapy

Allows the application of high-temperature localized chemotherapy, which increases its efficacy on residual tumor cells, without the usual systemic toxicity.

Selected patients

It is indicated exclusively in selected patients, after evaluation by an oncology committee.

Comprehensive assessment

At Quenet-Torrent Institute, a comprehensive assessment of each case is performed to determine treatment viability.

Ovarian carcinomatosis technology

The Institute has specialized equipment in a safe surgical environment adapted to highly complex procedures.

HIPEC equipment

Latest generation HIPEC perfusion equipment ensures precise control of temperature and drug concentration.

Specific instrumentation

Specific surgical instrumentation for complex peritonectomies.

Intraoperative imaging

Intraoperative imaging systems and 3D planning tools improve surgical precision.

Digital follow-up

Digital follow-up platforms for evolutionary and postoperative patient monitoring.

When it comes to ovarian carcinomatosis, every decision counts

Quenet-Torrent is not just a place where you receive medical care, it is a place where we help you face one of life's most difficult challenges with confidence and hope.

Experience in Complex Cases

We specialize in treating advanced and metastatic cancer, using complex and innovative techniques that other teams do not offer.

Comprehensive and Multidisciplinary Approach

We form a team around you with surgeons, oncologists, radiologists, nutritionists, and psychologists, all working together for your cure.

Research Advances

We stay up to date with the latest scientific advances, allowing us to apply innovative treatments with better results.

State-of-the-Art Technology

We have facilities equipped with the most advanced medical technology, allowing us to perform high-precision procedures with less impact on the body.

Personalized and Close Care

We care about each patient as a person. We listen, support, and guide every step of the way.

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What is the life expectancy in carcinomatosis?

Life expectancy in patients with peritoneal carcinomatosis varies considerably depending on multiple factors, such as the type of primary tumor, the extent of the disease, and the patient's general condition. Each case is unique and requires a personalized evaluation by a multidisciplinary team highly specialized in oncological surgery and specifically in the treatment of peritoneal carcinomatosis.

Our team of experts has extensive experience in managing this complex pathology, allowing us to analyze each clinical situation in detail and offer accurate information about the most advanced therapeutic options and specific prognosis for each patient.

Peritoneal carcinomatosis specialists

Every physician at Quenet-Torrent Institute is a recognized expert in their field, committed to the well-being of each patient.

Dr. Francois Quenet

Dr. Francois Quenet

Oncological surgeon

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"As an oncological surgeon dedicated for decades to treating peritoneal carcinomatosis, I believe our main mission is to transform the approach to this stage of the disease."
Dr. Juan Jose Torrent

Dr. Juan Jose Torrent

Oncological surgeon

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"The key to success lies in three pillars: meticulous candidate selection, mastery of specialized techniques, and an expert multidisciplinary team."
Prof. Luis Gonzalez Bayon

Prof. Luis Gonzalez Bayon

Oncological surgeon

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"Peritoneal carcinomatosis is not a single disease, but a spectrum of clinical scenarios that require individualized approaches."
Dr. Pablo Lozano Lominchar

Dr. Pablo Lozano Lominchar

Oncological surgeon

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"Every intraoperative decision counts: maximum oncological radicality with minimum functional impact."
Dr. Clara Montagut

Dr. Clara Montagut

Medical oncologist

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"Carcinomatosis surgery only makes sense within a global strategy where systemic treatments are coordinated with the intervention."

Frequently asked questions about ovarian cancer with carcinomatosis

Answers to the questions patients with advanced ovarian cancer ask most often.

Is stage III ovarian cancer curable?

Yes, it can be. Stage III ovarian cancer is potentially curable if complete cytoreduction (CC-0) is achieved. With that approach and the right systemic treatment, five-year survival is above 50%. Recurrences are common, but many patients live for years with the disease under control, and a relapse does not rule out treating it again.

What is the difference between optimal and complete cytoreduction?

Optimal cytoreduction used to mean leaving residual tumour smaller than 1 cm; complete (CC-0) means leaving no visible disease. Today the aim is always complete cytoreduction, because the volume of tumour left at the end of surgery is the factor with most influence on survival. It is also why the surgical team's experience is decisive.

When is HIPEC indicated in ovarian cancer?

HIPEC is mainly indicated in interval surgery, the operation performed after neoadjuvant chemotherapy in stage III disease. That is the setting in which the OVHIPEC trial showed a survival benefit. Its role in primary surgery and in recurrence is still under evaluation, so the indication is decided case by case in a multidisciplinary meeting.

Is it better to operate before or after chemotherapy?

It depends on whether all the disease can be removed up front. When complete cytoreduction looks achievable, operating first (primary debulking surgery) is preferable. If the disease is very extensive, neoadjuvant chemotherapy followed by interval surgery achieves comparable results with fewer complications. The decision is made with imaging and, at times, a laparoscopy.

Can a recurrence of ovarian cancer be operated on?

Yes, in selected cases. A recurrence can be operated on when it is platinum-sensitive, localised and the patient is in good general condition. The DESKTOP III trial showed a survival benefit in exactly that profile, identified by the AGO criteria. Outside those criteria surgery adds no advantage and treatment relies on chemotherapy.

How important is the BRCA mutation?

BRCA1/2 mutations make the tumour respond better to platinum agents and to PARP inhibitors. That improves prognosis and changes maintenance treatment, with drugs such as olaparib or niraparib. Genetic testing is therefore indicated in every patient with ovarian cancer, and the result also has consequences for family screening.

How long does cytoreductive surgery take?

Between 4 and 10 hours, depending on the extent of the disease and the number of resections and peritonectomies needed. It is a long but methodical operation: the aim is to remove all visible disease, not to shorten theatre time. If HIPEC is added, it takes about 90 minutes more within the same procedure.

What complications can the surgery have?

This is major surgery: the main risks are bleeding, infection, a leak at the bowel join when intestine is resected, and thromboembolic complications. In centres with specific experience, mortality is below 3% and severe complications below 20%. The team's case volume is decisive in those figures.

How long is the hospital stay?

The usual stay is 7 to 14 days. The first days may require monitoring in an intensive care unit, depending on how extensive the surgery was. The enhanced recovery (ERAS) programme we apply, with early mobilisation, early nutrition and pain control without excess opioids, shortens that time and reduces complications.

Why choose Quenet-Torrent for my treatment?

Because of volume and results: more than 500 cytoreductions for ovarian cancer and complete cytoreduction (CC-0) rates above 80%. Added to that are experience with HIPEC, a multidisciplinary team that decides every case and access to clinical trials. In this surgery, the number of cases a team treats translates directly into results.

Where to treat ovarian-origin peritoneal carcinomatosis?

We operate in two private hospitals of reference in Spain. The same medical team treats you in Madrid and Barcelona, with the same surgical and oncological standards.

Memorial Publio Cordón Hospital, Madrid
Madrid

Memorial Publio Cordón Hospital

Private hospital in Pozuelo de Alarcón with a multidisciplinary team specialised in digestive surgical oncology and cutting-edge surgical technology.

Paseo de la Casa de Campo, 5 28223 Pozuelo de Alarcón, Madrid
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Centro Médico Teknon, Barcelona
Barcelona

Centro Médico Teknon

Internationally recognised private hospital in Barcelona where the team carries out its high-complexity surgical oncology activity.

Carrer de Vilana, 12 08022 Barcelona
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Patients who survived cancer thanks to Quenet

Real testimonies from patients treated by our team in high-complexity surgical oncology.

Debra's case

66-year-old English woman with advanced ovarian cancer and peritoneal metastases. Treated with cytoreduction + HIPEC, she is now disease-free.

Read the full case

Rosario (Charo)'s case

73-year-old patient with advanced cancer treated with chemotherapy and high-complexity surgical oncology. Excellent survival and quality of life.

Read the full case

Felipe's case

A mistaken diagnosis of terminal colon cancer that a second opinion revealed to be pseudomyxoma peritonei, treatable with cytoreductive surgery and HIPEC.

Read the full case

Santiago's case

Diagnosed with widespread peritoneal carcinomatosis and considered inoperable. After complete cytoreduction with HIPEC, today his is a story of hope and survival.

Read the full case

What our patients say

See on Google ★★★★★
L
Loreto Toscano
4 weeks ago
★★★★★

Wonderful surgical team, among the best out there. Dr. Torrent (expert in peritoneal carcinomatosis) is an exceptional surgeon and an even better person. His coordinator is super kind, fast and efficient. The human treatment is great and the results are too. This is of vital importance for cancer patients.

K
Kanijo Sánchez
5 months ago
★★★★★

In the public healthcare system they gave my father a maximum of one year to live. They only offered him chemo and no hope, said it was impossible, that nothing could be done. He had several tumors inside the peritoneal sac with metastases. A year and a half later he is clean, completely cured. His latest PET scan came back clean. We are very happy. Thanks to Dr. Torrent and his team. THANK YOU.

M
Manuel S.D.
A year ago
★★★★★

Excellent professionals, especially Dr. Torrent, attentive at all times to the patient (my wife), operated for peritoneal pseudomyxoma. They helped us with all our needs since we came from outside Barcelona. Thank you Elisabeth. We are very grateful to Quenet Torrent Institute, thank you for everything.

P
Pilar Garcés
2 years ago
★★★★★

I am a 63-year-old patient. They detected adrenal gland cancer and told me there was nothing to be done. I sought a second opinion and they told me about the Quenet Torrent team, specialists in complex operations. Dr. Torrent, from the first moment, told me they could operate. They operated and removed a large tumor mass. I spent a week in the ICU and a month on the ward. Every day he came morning and evening, no matter Saturday or Sunday. Never throw in the towel. I am happy to have found these professionals who gave me my life back. Thank you.

I
Imma Rondán
3 years ago
★★★★★

Many thanks for your attention. Dr. Torrent always attentive, involved and decisive. The reception staff very pleasant and always offering the best option. 100% RECOMMENDED. THANK YOU.

M
Mª Cristina Domínguez
5 years ago
★★★★★

Dr. Torrent helped me make the best decision at a difficult moment. I think he is a great professional and a person capable of accompanying you and putting himself in another's shoes. Thank you for everything.

F
Francisco García
6 years ago
★★★★★

I have peritoneal carcinomatosis. Sending my diagnosis to every center, practically all agreed on palliative chemo with little survival time since I had very aggressive cell types. Until we reached Dr. Quenet, Dr. Torrent and their team. I can only confirm what their CV announces: they are far ahead of the rest. They saved my life, at surgery the harmful cells everyone diagnosed (and used to refuse to operate) were not there. This intervention has become the best investment of my life.

M
Mara Reboredo
6 years ago
★★★★★

The best decision of my life was finding this excellent team of surgeons who saved my husband's life. At a prestigious international clinic in Madrid he was given up for lost with advanced peritoneal carcinomatosis from appendiceal cancer, and thanks to them, the best professionals in this field, he was operated on very successfully. A perfect recovery with no complications, because they were on top of his progress at all times. They have a great quality: from the start they were very honest and close. I can only be deeply grateful; we went to buy time and thanks to them my husband got his life back.

E
Elisenda Br.
7 years ago
★★★★★

Dr. Torrent is a brilliant surgeon and a very easy-going and polite doctor. When talking with him you can easily grasp his qualities as a professional and human being: perseverance, innate curiosity and passion for learning, humility, honesty and empathy. Having surgery is always an intense experience, anxieties arise and one feels very vulnerable. All of that being said, as his ex-patient I can assure that throughout the process his care and professionalism were absolutely outstanding. I felt safe, supported by him, knowing I was in good hands. I will be forever grateful. Moltes gràcies Dr. Torrent!

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