📍 Whitefield, Bengaluru
HOD & Senior Consultant · Surgical Oncology
Consultation by Appointment
Multivisceral surgery, also called multivisceral resection, is a planned cancer operation in which the surgeon removes a tumour together with one or more adjacent organs or structures it has invaded, in a single operation, with the aim of complete removal and long-term control of the disease.
It is a form of complex surgical oncology reserved for selected patients with locally advanced or recurrent cancers. “Multivisceral” means “involving many organs (viscera)”. Depending on the cancer, the organs and tissues most often involved include:
Removing the involved organ with the tumour is often important because separating them may leave cancer cells behind and raise the risk of recurrence. Sometimes organs are stuck together only by inflammation rather than true invasion, so the surgeon aims to remove only what is necessary.
En bloc resection is the removal of a tumour together with the involved adjacent tissue as one intact specimen, without cutting into or breaking the tumour.
“En bloc” means “as a block”. It is the technical foundation of multivisceral surgery and the main way surgeons work toward clear margins. The main principles are:
Locally advanced cancer is a cancer that has grown beyond its organ of origin into nearby tissues, organs or lymph nodes but has not spread to distant parts of the body.
Locally advanced disease often corresponds to T4 or bulky node-positive stage in the TNM system. Many locally advanced cancers remain potentially curable with a combination of chemotherapy, radiotherapy and surgery. The table separates three terms that patients often confuse.
| Term | Meaning | Typical treatment goal |
|---|---|---|
| Locally advanced | Spread into adjacent organs or nodes; no distant metastases | Potential cure using combined therapy and multivisceral surgery |
| Recurrent | Cancer that returns after earlier treatment, locally or in the pelvis | Cure in selected patients; otherwise control of disease |
| Metastatic | Spread to distant organs (for example liver, lung, bone) | Usually disease control; surgery only in selected cases |
A cancer operation is complex when the tumour’s size, location or involvement of several organs, major blood vessels or previously treated tissue requires multi-organ removal, reconstruction and coordination among several specialist teams.
Surgeons describe an operation as complex when one or more of these features are present:
Multivisceral surgery is typically considered when a tumour has invaded neighbouring organs and removing those organs together with the tumour offers a realistic chance of achieving clear margins.
It is generally considered only after imaging and multidisciplinary review show that a complete resection is realistic. Common examples:
| Cancer type | Examples of structures removed with the tumour |
|---|---|
| Colon and rectal cancer | Bladder, uterus, ovary, vagina, prostate, abdominal wall, pelvic sidewall structures |
| Stomach cancer | Spleen, tail of pancreas, colon, diaphragm, part of the liver |
| Pancreatic cancer (selected cases) | Portal or superior mesenteric vein, colon, stomach, adrenal gland, kidney |
| Retroperitoneal and other sarcomas | Kidney, colon, adrenal gland, psoas muscle, segments of major veins |
| Gynaecologic cancers (cervix, uterus, ovary, vulva, vagina) | Bladder, rectum, or pelvic exenteration |
| Urologic cancers (bladder, prostate, kidney) | Adjacent bowel, pelvic organs, vessels |
| Recurrent cancers after surgery or radiation | Pelvic organs, pelvic sidewall structures, sacrum or vessels (selected cases) |
In many selected patients, yes: a tumour that involves another organ may still be removed with curative intent when imaging and multidisciplinary review indicate that all visible disease can be taken out with clear margins and the patient is fit for surgery.
Contact between a tumour and an organ on a scan does not always mean invasion, and chemotherapy or radiotherapy given first can shrink some tumours and make them resectable. Many people live well without one kidney, the spleen, the uterus or part of the bowel. Factors that generally favour removal:
In selected patients, yes: major veins and, less commonly, arteries can be resected and reconstructed as part of cancer surgery, which may allow complete removal of tumours that involve them.
Vascular resection and reconstruction is performed with a vascular surgeon on the team. Venous reconstruction is well established; arterial resection is done less often, in specialised centres and in carefully selected patients.
| Vessel | Cancers where it may be involved | Reconstruction options |
|---|---|---|
| Portal vein and superior mesenteric vein | Pancreatic, bile duct, liver | Direct end-to-end repair, patch, or interposition graft |
| Inferior vena cava (IVC) | Retroperitoneal sarcoma, kidney, adrenal, liver | Patch or graft; sometimes tied off if collateral drainage is adequate |
| Iliac veins and arteries | Pelvic recurrences, pelvic sarcoma, gynaecologic cancers | Graft or bypass |
| Aorta and other major arteries | Rare, highly selected cases | Graft replacement or bypass |
Pelvic exenteration is an extensive operation that removes multiple organs within the pelvis, together with the cancer, to treat locally advanced or recurrent pelvic cancers with curative intent.
It is used for rectal, anal, cervical, uterine, vaginal, vulvar, bladder and prostate cancers that have invaded neighbouring pelvic organs or returned after treatment. It is usually preceded by chemoradiation and performed in specialised centres.
| Type | Organs typically removed | Reconstruction |
|---|---|---|
| Anterior | Bladder and reproductive organs (uterus, cervix, vagina, or prostate) | Urinary diversion (urostomy) |
| Posterior | Rectum, anal canal and reproductive organs; bladder preserved | Colostomy |
| Total | Bladder, rectum and reproductive organs | Colostomy and urostomy |
| Extended or lateral | Any of the above plus pelvic sidewall structures, pelvic bone, sacrum or vessels | Flap reconstruction, pelvic floor repair, vascular grafts as needed |
In selected patients, yes: recurrent pelvic cancer may be treated with curative-intent surgery, most often pelvic exenteration or an extended pelvic resection, when the recurrence appears confined to the pelvis and can be removed completely.
Recurrent cancer arises in previously operated or irradiated tissue, so it is technically harder and is best planned at a specialised centre. The usual assessment sequence:
| Step | Action | Purpose |
|---|---|---|
| 1. Confirm the recurrence | Biopsy and review of earlier pathology | Establish that the finding is cancer and identify its type |
| 2. Restage | Pelvic MRI, CT of chest and abdomen, PET-CT | Define the full extent of disease |
| 3. Exclude distant disease | Review of scans for metastases | Avoid non-curative surgery |
| 4. Map involvement | Assess pelvic sidewall, sacrum, nerves and blood vessels | Decide whether clear margins are feasible |
| 5. Tumour board review | Multidisciplinary discussion | Agree on pre-operative therapy and the surgical plan |
| 6. Fitness and prehabilitation | Anaesthetic assessment, nutrition and exercise plan | Prepare the body for major surgery |
If surgery is not appropriate, options may include re-irradiation, systemic therapy, intraoperative radiotherapy and palliative care, so that patients are still offered a treatment plan.
An R0 resection is a cancer operation after which the pathologist confirms no cancer cells at any cut edge (margin) of the removed specimen, and it is a central goal of curative cancer surgery because margin status is closely linked to the risk of local recurrence.
| Code | Meaning | Impact |
|---|---|---|
| R0 | No cancer at the margins under the microscope | Best chance of cure and lowest local recurrence |
| R1 | Microscopic cancer cells at the margin | Higher risk of recurrence; may need further therapy |
| R2 | Visible tumour left behind | Surgery is not curative; further treatment is required |
Across many solid cancers, achieving an R0 resection is associated with lower recurrence and better survival. Multivisceral surgery is often planned specifically to convert what would otherwise be an R1 or R2 resection into an R0 resection. The final margin status is confirmed by pathology, typically within one to two weeks.
Complex planning is essential in multivisceral surgery because many of the decisions that shape safety and outcome, including which organs to remove, how to reconstruct and in what order to treat, are made before the first incision.
| Step | Who is involved | Purpose |
|---|---|---|
| 1. Expert imaging review | Radiologists, surgical oncologists | Define tumour extent and its relationship to organs and vessels (CT, MRI, PET-CT as appropriate) |
| 2. Pathology confirmation | Pathologists | Confirm the diagnosis and tumour biology, including molecular testing where relevant |
| 3. Multidisciplinary tumour board | Surgical, medical and radiation oncologists, radiologists, pathologists, anaesthetists; urology, gynaecology, vascular, plastic or thoracic surgeons as needed | Agree on one shared treatment plan |
| 4. Treatment sequencing | Medical and radiation oncologists, surgeons | Decide whether chemotherapy, radiotherapy or targeted therapy comes before or after surgery |
| 5. Fitness assessment | Anaesthetists, physiotherapists, dietitians | Optimise nutrition, exercise capacity and conditions such as diabetes, anaemia or blood pressure |
| 6. Operative blueprint | Operating surgeons and reconstructive teams | Plan which organs to remove, reconstruction, stoma sites, blood management and intensive care support |
| 7. Contingency planning | Whole surgical and anaesthetic team | Prepare for unexpected findings during surgery |
Careful planning is associated with higher R0 rates, fewer complications, better preservation of function and more realistic expectations for patients and families.
Suitable candidates are typically patients whose cancer appears confined to the local region, is judged removable on imaging and multidisciplinary review, and who are fit enough to tolerate a major operation. Age alone does not usually exclude a patient. Overall fitness, heart and lung function, nutrition and personal goals matter more. Eligibility is decided case by case at a tumour board, and the final decision is made together with the patient.
Multivisceral surgery is major surgery with real risks, which specialised planning, anaesthesia and intensive care are designed to reduce, and any long-term change such as a stoma is discussed before you decide.
Your surgeon will go through your personal risk profile with you before you decide.
Preparation, often called prehabilitation, is a structured plan of nutrition, physical conditioning and medical optimisation that aims to help patients tolerate surgery and recover more smoothly.
| Area | What it typically involves | Why it may help |
|---|---|---|
| Nutrition | Dietitian review, protein-rich diet, supplements if advised | Well-nourished patients may heal better and have fewer complications |
| Physical activity | Regular walking or supervised exercise | May improve fitness for surgery and support early recovery |
| Breathing exercises | Deep-breathing and inspiratory training | May reduce chest complications after anaesthesia |
| Smoking and alcohol | Stopping or reducing before surgery | May improve wound healing and lung function |
| Medical conditions | Optimising diabetes, anaemia, blood pressure, heart and lung conditions | May lower avoidable risk |
| Medication review | Adjusting blood thinners or other medicines as directed | May reduce bleeding and interaction risks |
| Practical planning | Home help, transport, stoma teaching, time off work | May reduce stress and support earlier discharge |
Recovery from multivisceral surgery is gradual: many patients spend the first days in intensive or high-dependency care, stay in hospital for one to three weeks or longer, and need several months to return to full daily activity, although timelines vary.
| Phase | Typical timeframe | What to expect |
|---|---|---|
| Intensive or high-dependency care | First 1 to 3 days | Close monitoring, pain control, breathing support, early sitting up |
| Ward recovery | Until about week 1 to 3 | Walking, gradual return to diet, drain and catheter removal, stoma teaching |
| Early home recovery | Weeks 2 to 6 | Fatigue, wound care, lifting restrictions, nutrition support |
| Rebuilding | Months 2 to 3 | Gradual return to activity; further chemotherapy or radiotherapy if advised by final pathology |
| Long-term recovery | Months 3 to 6 and beyond | Many people regain independence; some need longer. Regular follow-up visits and scans |
Timelines vary with the extent of surgery and your health. Recovery is supported by early mobilisation and physiotherapy, nutrition and pain-control plans, and stoma care training and psychological support.
Outcomes vary widely and depend on the cancer type, stage, response to other treatments and whether an R0 resection is achieved; in carefully selected patients, multivisceral surgery may offer long-term disease control and, in some cases, cure, but results cannot be guaranteed. Your team will give you an honest, individualised assessment based on your scans, pathology and general health.
A complex cancer is generally considered inoperable, or unresectable, when complete removal with clear margins cannot be achieved safely, or when surgery would not improve survival or quality of life enough to justify its risks.
| Factor | Why it limits surgery | Can this change? |
|---|---|---|
| Extensive untreatable distant metastases | Surgery cannot cure the disease | Limited (oligometastatic) disease may be treated with combined approaches |
| Encasement of critical arteries or key nerves | The structure cannot be safely removed or reconstructed | Sometimes improves after chemotherapy or radiotherapy |
| Extensive pelvic sidewall, high sacral or bone involvement | Clear margins may not be achievable | Depends on the expertise of the centre |
| Insufficient remaining organ function | The body could not function after resection | Sometimes improved with techniques such as portal vein embolisation |
| Poor general health | Risks outweigh the likely benefit | Prehabilitation may improve fitness |
| Widespread peritoneal disease | Complete removal is often not feasible | Selected tumour types may qualify for specialised surgery |
“Inoperable” is a judgement that depends on the tumour, its response to treatment and the experience of the team, so it is not always permanent. Some tumours become operable after treatment, an approach known as conversion surgery.
Seeking a second opinion from a multidisciplinary cancer centre with experience in complex surgery is reasonable and is often recommended when you have been told your complex cancer is inoperable.
Judgements of resectability vary with surgeon experience, hospital volume and access to vascular, plastic, urologic and gynaecologic teams, and new treatment strategies can change what is possible. A second opinion does not mean leaving your current doctor; it is a standard part of complex cancer care. What to bring:
| Item | Why it matters | Practical tip |
|---|---|---|
| Scans and reports (CT, MRI, PET-CT) | Allow independent re-review of tumour extent | Bring imaging discs or files as well as written reports |
| Biopsy and pathology reports | Confirm cancer type and features | Ask the hospital whether slides can be requested for review |
| Treatment summaries | Show previous surgery, chemotherapy and radiotherapy | Include dates, drug names and radiation doses if available |
| Current medicines and allergies | Guide fitness assessment and safe planning | Bring a written list or the packaging |
| A companion (optional) | Helps with questions and remembering information | Write your questions down beforehand |
Read our complete guide to getting a cancer second opinion →
The care pathway for multivisceral surgery typically moves through seven stages, from records review and consultation to surgery, recovery and long-term follow-up.
| Stage | What happens | Typical timing | What you provide |
|---|---|---|---|
| 1. Records review | Your reports, scans, pathology and history are reviewed | Shortly after records arrive | Reports, imaging, treatment summaries |
| 2. Consultation | Dr Ashwin K.R. reviews findings and discusses options | By appointment | Questions, medicines list, companion |
| 3. Staging and tests | Additional imaging, biopsies or laboratory tests if needed | Varies | Attendance at appointments |
| 4. Tumour board | Multidisciplinary team agrees on a plan | Varies | Nothing extra; outcome shared with you |
| 5. Pre-operative treatment and prehabilitation | Chemotherapy, radiotherapy or conditioning if recommended | Varies from weeks to months | Consent and adherence to the plan |
| 6. Surgery and hospital stay | Resection, intensive care and ward recovery | Often one to three weeks or longer | Informed consent, admission preparation |
| 7. Follow-up | Pathology review, further therapy and surveillance imaging | Schedule set by your team | Attendance and symptom reporting |
You can book a consultation by phone, WhatsApp or the online appointment form, and the team will tell you which records to send so your case can be reviewed before you arrive.
| Item | Details |
|---|---|
| Phone | +91 88840 09955 |
| WhatsApp (including sending reports) | +91 88840 09955 |
| drashwinkr.oncology@gmail.com | |
| Online appointment form | Book a consultation |
| Hospital | Aster Whitefield Hospital, Whitefield, Bengaluru |
| Consultations | By appointment |
