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Last updated: 14-Oct-2026
Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
Robotic Cancer Surgeon (GI)
Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad · 18 years of experience
★★★★★ Google: 4.9 from 53 reviews (Gota clinic) · 5.0 from 25 reviews (Apollo, Bhat)
In short
Pelvic exenteration removes the rectum together with the pelvic organs the cancer has grown into, all in one piece, when a standard rectal operation cannot clear it.
It is mostly an open operation. A robot can help in selected first-time cancers that reach one organ in front, after chemoradiation, in experienced hands.
It is done only when scans show every trace of cancer can be removed with clear edges. If that is not possible, the operation is not advised.
Most rectal cancers are removed by a standard operation called TME. The rectum and the fatty tissue around it come out inside an intact wrapper. Sometimes the cancer has grown through that wrapper into a neighbour. It may be the bladder, the prostate, the womb, the back wall of the vagina or the tailbone. Sometimes the cancer has come back in the pelvis after earlier treatment. Then TME alone would leave cancer behind. The only way to clear it is to take the involved organs with the rectum, in one block. That operation is pelvic exenteration.
The organs removed depend on where the cancer has grown. MRI of the pelvis shows this before surgery, and it sets the type of operation.
| Type | What comes out with the rectum |
|---|---|
| Posterior, in women. | The womb, cervix and back wall of the vagina. |
| Anterior, mostly in men. | The bladder and prostate. |
| Total. | The bladder, with the prostate in men or the womb and vagina in women. |
| With part of the sacrum. | The lower tailbone bone, when cancer has reached it. |
| With the side wall. | The side wall of the pelvis and its main blood vessels on that side. |
When only the seminal vesicles in a man are involved, a wider rectal operation that takes them is usually enough. Full exenteration is not needed for that.
The open operation is the standard. Keyhole and robotic methods are used only for selected cases, and they never change what must be removed.
| Situation | Usual approach |
|---|---|
| First-time cancer reaching one organ in front, shrunk by chemoradiation. | Robotic can be considered in selected cases. |
| Selected cases at experienced centres. | Keyhole-assisted can be considered. |
| Bone of the sacrum to be removed. | Open. |
| Side wall and its main vessels to be removed. | Open. |
| Cancer that has come back after earlier surgery. | Usually open. |
| Pelvis given radiation twice. | Usually open. |
Why does the robot help at all here? The pelvis is a narrow, bony funnel. The robot gives a steady, magnified 3D view. Its wristed instruments turn corners that straight keyhole tools cannot. An extra arm holds tissue still. This helps find the right plane deep in the pelvis, mainly in men, heavier people and after radiation.
What the robot does not do is just as plain. It does not make an operation with sacrum or side-wall removal smaller. The rule for clear edges stays the same with every approach.
The cancer must be fully removable with clear edges, and you must be fit for a long, major operation. Both conditions are checked before anything else.
MRI of the pelvis is the key test. Treatment with chemotherapy and radiation usually comes first, and scans are repeated before the operation is confirmed.
If the cancer disappears on the repeat scans, watching closely without surgery may be discussed. If it spreads elsewhere in that time, the operation is not done.
Most people live with two stomas, one for stool and one for urine. Sexual function is usually lost. These changes are explained fully before you decide.
| Area | What it usually means |
|---|---|
| Stool. | A permanent colostomy bag on the left side of the belly. |
| Urine. | A urine stoma made from a short piece of small bowel, when the bladder is removed. |
| Perineum. | The large wound between the legs is closed with a muscle flap, often from the belly or thigh. |
| Sexual function. | Usually lost. Counselling is offered. |
| Pain. | Long-lasting pelvic pain can occur, and a pain specialist helps. |
| Nerves. | If bone is removed, leg weakness or numbness can follow, depending on the level. |
| Hospital stay. | A few days in intensive care, then a long ward stay. |
| Follow-up. | Regular checks by several specialists, for life. |
The risks of the operation itself are serious. They include heavy bleeding, infection deep in the pelvis, leaks, wound breakdown, kidney strain and blood clots. Your own risk is discussed openly at the consultation.
This is never a one-surgeon decision. The rectal cancer surgeon leads, with a urologist, a gynaecologist and a plastic surgeon. Bone and nerve surgeons join when the sacrum is involved. The radiologist, the pathologist, both oncologists, the intensive care team and the stoma nurse all take part. Dr Harsh Shah reviews your scans and tells you plainly whether the operation is possible, what form it would take, and which team it needs. If your case needs a team that is not available, you are told so and referred.
Before you agree, the questions below are worth asking. Treatment for rectal cancer by height is explained on robotic rectal cancer surgery by tumour height.
Mostly it is open. A robot can help in selected first-time cancers that reach one organ in front. Removal of bone or the side wall stays open.
Keyhole-assisted exenteration is possible in selected cases at experienced centres. The approach never changes what must be removed to get clear edges.
Most people do, one for stool and one for urine, when the bladder is removed. A posterior operation in women may keep the bladder.
Sometimes, yes, if scans show all of it can be removed with clear edges and there is no spread beyond surgery. PET-CT is part of this check.
When clear edges cannot be reached, when there is spread that cannot be removed, when bone is involved high up the sacrum, or when you are not fit.
Rectal cancer surgery at this centre is covered on the robotic rectal cancer surgery page. For questions before you travel, call +91-63590-11009.
Shah’s Gastro, Cancer & Robotic Surgery Centre, Gota, Ahmedabad
Consultation, review of MRI, CT and earlier reports, second opinions and follow-up.
Apollo Hospital, Bhat, Gandhinagar
Admission, robotic and open surgery, intensive care and inpatient care.
Told the rectal cancer has reached the bladder, womb, vagina or tailbone, or has come back? The MRI and CT reports, any PET-CT, and the earlier operation and biopsy reports can be sent ahead on WhatsApp, so the visit starts with them already read. Whether an operation is possible is decided at the consultation and by the tumour board. Call +91-63590-11009 Send reports before your visit
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