- For Appointment:
- +91 63590 11009
- Chat on Whatsapp
Rectal cancer is not one operation. The height of the tumour above the anal opening, and what the pelvic MRI shows around it, decide which robotic operation you need, whether treatment comes first, and whether a temporary stoma is part of the plan. This page is the map: it explains the choice, what all four operations share, and links to the page written for each level. Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad.
Last updated: 9 October 2026
Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Robotic Cancer Surgeon (GI)
Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad
★★★★★ Google: 4.9 from 53 reviews (Gota clinic) · 5.0 from 25 reviews (Apollo, Bhat)
Shah’s Gastro, Cancer & Robotic Surgery Centre. Super-specialty training in surgical gastroenterology, two higher degrees in it, and 18 years of experience in GI and cancer surgery. Every rectal cancer is discussed at the tumour board once the MRI and CT are ready, before any treatment begins, and Dr Harsh Shah performs the operation himself.
In short
Four robotic operations treat rectal cancer here, and the tumour’s height decides between them: a high anterior resection for the upper rectum, an anterior resection for the mid rectum, a low anterior resection with total mesorectal excision for the low rectum, and, for the lowest tumours, a decision between keeping the sphincter and a permanent colostomy.
The pelvic MRI is the test that decides. It shows the height, how close the tumour comes to the fatty envelope around the rectum, whether it has entered a vein, the lymph nodes, and for low tumours whether the sphincter muscles are involved. No treatment is decided before that report exists.
Whatever the level, the cancer principle is the same: the rectum is removed inside its intact envelope with a clear margin all round, and the nerves for bladder and sexual function are kept. A low join is usually protected by a temporary ileostomy, which is closed later.
The rectum is the last part of the bowel, running down through the pelvis to the anal canal. The lower the tumour sits, the deeper in the narrow pelvis the surgeon must work, the closer the join comes to the sphincter, and the more likely a temporary stoma becomes. That is why the same disease leads to different operations.
Height is measured in two ways. At the first visit the surgeon examines the rectum with a finger, which shows how low the tumour is, which side it lies on, whether it is fixed, and how it relates to the sphincter. A rigid scope then measures the distance from the anal opening; a flexible scope tends to overestimate it, so the rigid reading is the one used for planning.
The MRI turns that measurement into a plan. It shows the tumour’s height again, and for a low tumour whether the inner and outer sphincter muscles and the pelvic floor are involved. Those two facts together sort a tumour into the upper, mid, low or ultra-low group, and each group has its own operation.
Tumours higher than the rectum, in the sigmoid colon, are treated as colon cancer, with a different operation and no radiotherapy question. Very early tumours, found only in the inner layers and meeting strict criteria under the microscope, are sometimes removed through the anus without a major operation; that is a narrow exception, not the usual path.
Find the row that matches your MRI report, then open the page written for that level. Each page explains that operation in detail: what is removed, how the robot is set up, how the join is made, and what recovery looks like.
| Tumour level | The usual robotic operation | Temporary stoma? | Read the page |
|---|---|---|---|
| Upper rectum | High anterior resection: the top of the rectum and its fatty envelope are removed with a margin below the tumour, and the bowel is joined higher in the pelvis | Uncommon, because the join sits high | Robotic high anterior resection |
| Mid rectum | Anterior resection: the rectum and its envelope are removed to below the tumour, and the bowel is joined in the pelvis | Often, when the join sits low | Robotic anterior resection for mid-rectal cancer |
| Low rectum, sphincter free | Low anterior resection with total mesorectal excision: the whole envelope is removed and the colon is joined just above the anal canal | Yes, as a rule, to protect the low join | Robotic nerve-sparing TME for low rectal cancer |
| Ultra-low, at or into the sphincter | Intersphincteric resection, keeping the outer sphincter, for selected patients with good control; otherwise abdominoperineal excision with a permanent colostomy | Temporary after an intersphincteric resection; permanent after abdominoperineal excision | The ultra-low sphincter decision |
The boundaries between rows are decided on your own MRI and examination, not on a fixed measurement alone. A tumour on the border between two levels is planned by the tumour board, and treatment before surgery can shrink it enough to change the operation.
A synoptic pelvic MRI report states five things: how deep the tumour has grown, how close it comes to the fatty envelope’s outer layer, whether it has entered a vein outside the bowel wall, the lymph nodes, and its height, with the sphincter and pelvic floor described for low tumours.
A CT of the chest, abdomen and pelvis looks for spread beyond the pelvis, and a full colonoscopy checks the rest of the colon for a second growth. Those tests, and how a rectal cancer is first found, are on the rectal cancer pages of this site; this page uses their results to explain the choice of operation.
The MRI also sorts the tumour by risk, and that decides whether surgery comes first. An early tumour goes straight to the operation. An intermediate tumour, clear of the envelope’s outer layer, may need chemotherapy alone first, without pelvic radiotherapy. A locally advanced or low tumour receives all its chemotherapy and radiotherapy before the operation.
| MRI risk group | What it means | Plan |
|---|---|---|
| Early or good | Small tumour, or a mid or high tumour with a clear envelope and no vein involvement | Straight to the robotic operation |
| Intermediate | Grown into the fat, but clear of the envelope’s outer layer | Chemotherapy alone first, leaving out pelvic radiotherapy; radiotherapy is added only if the tumour does not respond |
| Locally advanced or high risk | Close to or through the envelope, a vein involved, many nodes, or a low tumour | Total neoadjuvant therapy: all the chemotherapy and radiotherapy before the operation |
After radiotherapy the operation is usually done about two to three months after it ends. Operating into a freshly irradiated pelvis raises the risk of a leak and of wound problems, so the wait is deliberate, not a delay.
Leaving out radiotherapy for an intermediate tumour spares long-term effects on the bowel, bladder, sexual function and fertility. For anyone young enough to plan a family, fertility preservation is discussed before pelvic radiotherapy begins, because it cannot be done afterwards.
When the tumour disappears completely after treatment, with nothing felt on examination, nothing seen on the scope and nothing on MRI, a careful watch-and-wait programme may be offered instead of an operation. It means an examination, a scope and an MRI every few months for years, and an operation if the tumour regrows. It is offered only to patients who can keep to that schedule.
Whatever the level, the rectum is removed inside its fatty envelope, called the mesorectum, by sharp dissection in the natural plane around it, keeping the envelope intact and the margin clear all round. The quality of that specimen is graded by the pathologist, because it predicts whether the cancer returns in the pelvis.
The plane around the envelope is close to the nerves that control the bladder and sexual function. They run along the side walls of the pelvis and in front of the rectum, and they are identified and kept unless the cancer itself involves them. Keeping them is a deliberate part of every one of the four operations, not a bonus of one.
If the tumour is stuck to another organ, such as the bladder, the womb or the side wall of the pelvis, it is never peeled off. The involved part is removed together with the rectum in one piece, which may mean a larger operation planned at the tumour board.
Every low join is tested at the end of the operation, by filling the bowel with air under water or by looking through a scope, before the abdomen is closed. A drain in the pelvis is reasonable after a low join.
The operation removes the same tissue whether it is done open, by keyhole or by robot. The robot changes how the deep pelvis is reached: a steady magnified three-dimensional view and wristed instruments that keep working in the narrow space at the bottom of the pelvis, which matters most in a narrow male pelvis.
Keyhole and robotic total mesorectal excision are both accepted in experienced hands. Straight keyhole instruments lose their angle low in the pelvis; the robot’s instruments bend at the tip, so the surgeon can stay in the plane around the envelope and see the nerves beside it. The surgeon controls the camera, so the view stays steady.
The robot is docked once the patient is positioned head-down with the legs supported, and its ports are placed across the abdomen. The exact port layout, and how the robot is set up for a high or a very low tumour, is explained on each level’s page.
What the robot does not change is the measure of success. The endpoint is the quality of the specimen, not the size of the cuts. If the plane is being lost, the operation is converted without hesitation, and that is a safety decision agreed at consent.
| Open | Keyhole | Robotic | |
|---|---|---|---|
| Cut | A long cut down the abdomen | Small ports | Small ports |
| View low in the pelvis | Direct, but hard to see the bottom of a narrow pelvis | Magnified, flat image | Magnified, three-dimensional, surgeon-controlled |
| Instruments in the deep pelvis | Hands and long instruments | Straight, angle limited | Wristed tips |
| Blood loss | Higher | Lower | Lower |
| Lymph nodes and envelope removed | The same | The same | The same |
| Hospital stay and return to work | Longest | Shorter | Shorter |
| Cost | Lowest | Similar to open | Higher, for the robotic instruments |
Open surgery is chosen, or the operation is converted, when the tumour has grown into neighbouring organs and a larger en-bloc removal is needed, when previous surgery or radiotherapy has left dense scarring, or when the plane around the envelope cannot be kept safely through ports.
A tumour that has grown into the bladder, prostate, womb, vagina or the side wall of the pelvis may need removal of those structures together with the rectum. That is planned at the tumour board, and the approach is chosen for that operation, not for the robot.
An obstructing rectal tumour is never removed as an emergency before it is staged. A stoma is made first to relieve the blockage, the tumour is staged and treated, and the planned operation follows.
A temporary ileostomy is a small opening of the small bowel on the abdomen that rests a low join while it heals. It does not prevent a leak, but it turns a leak that could be life-threatening into one that can be managed. It is usual after a low join and uncommon after a high one.
The ileostomy is usually closed a few months later, once any chemotherapy after surgery is finished and a contrast X-ray shows the join is intact. Closing it is a smaller operation. A small number of ileostomies are never closed, for example when the join does not heal well or the patient’s health does not allow it; this is discussed at consent.
A permanent colostomy is needed only when the sphincter itself has to be removed, in an abdominoperineal excision. That decision is made before the operation, with the patient, and is explained on the ultra-low page.
Before any operation that may end with a stoma, a stoma nurse marks the right site on the abdomen and teaches how to care for it. Going home depends on the patient or a family member being able to change the bag unaided; that is usually what sets the day of discharge, not the abdomen.
Patients sit out of bed on the day of surgery, eat from the next day, and walk several times a day. The catheter comes out early, or is kept a few days after a very low operation. Discharge follows once eating, walking and stoma care are steady.
| When | What happens |
|---|---|
| Day of surgery | Out of bed a few hours after the operation; clear fluids; pain relief with minimal opioids; the drip stops once drinking |
| Next day | Diet as tolerated; walking four times; catheter out, or kept longer after a very low operation; stoma teaching starts |
| Second day | Full diet; walking more; tablets for pain; stoma output watched |
| Third day | Pelvic drain out if the fluid is clear; ileostomy output checked; discharge criteria reviewed |
| Fourth to sixth days | Home once the patient or family can manage the stoma |
The team watches for warning signs and acts the same day: a fast pulse, fever, pain in the pelvis or rectum, cloudy fluid in the drain, or a patient who stops improving. After going home, a very high output from the ileostomy with thirst or reduced urine needs a call to the team, because dehydration is the commonest reason to come back.
After a low join, bowel habits change: urgency, frequent small motions, clustering and sometimes leakage. This is called low anterior resection syndrome. It is explained before the operation, not after, and it improves over the first one to two years, though it may not go away completely.
Bowel retraining, medicines that slow the bowel, pelvic floor exercises and, where needed, rinsing the bowel from below help most patients. Patients are asked about it at every visit after the stoma is closed, because many do not mention it themselves.
Bladder emptying can be slow at first after a very low operation, which is why the catheter is sometimes kept a little longer. Sexual function can change in men and in women, more often after radiotherapy; it is asked about at follow-up, and help is available.
These effects, the leak risk of a low join and the stoma are discussed in detail at the consent visit, with the figures that apply to your own operation.
The pathology report is discussed at about two weeks. It gives the final stage and the quality of the specimen, and decides whether chemotherapy follows. Follow-up then continues every three months, with a blood test for the tumour marker, a yearly CT scan, and colonoscopy at intervals.
Follow-up runs for ten years at this centre, longer and more often than many guideline schedules, by Dr Harsh Shah’s decision. Patients on watch-and-wait follow a closer schedule with examination, scope and MRI.
If a stoma was made, its closure is planned once chemotherapy is complete and the join has been checked. Function, the stoma, diet and exercise are reviewed at each visit.
★★★★★
“We came from Mp Indore for the treatment of Rectal cancer and Robotic surgery was done by Dr harsh shah....After surgery my son is good now. Heartly thankful to you sir...”
— Parasram Solanki, Google review, Google listing
★★★★★
“Excellent doctor for stomach cancer. We r very happy. Recommend for gastro cancer treatment in Ahmedabad”
Purshottam Meena · Google review
★★★★★
“I had a truly positive experience with Dr. Harsh Shah. He is not only highly knowledgeable but also very compassionate and patient in explaining every detail. I underwent CRS HIPEC surgery under his care, and I couldn’t have asked for a better doctor. The entire process was smooth, and his expertise made a complex procedure feel manageable. Post-surgery recovery was well-monitored, and he was always available for any concerns. Highly recommend Dr. Harsh Shah for anyone needing advanced surgical oncology care.”
Akram Khan · Google review
Quoted exactly as written on the centre’s Google listings: a rectal cancer patient’s family, and two patients of Dr Harsh Shah treated for other cancers, followed by a patient speaking after rectal cancer surgery.
Watch Dr Harsh Shah’s video on robotic low anterior resection and saving the sphincter (YouTube).
A robotic rectal operation costs more than an open one, because of the robotic instruments. A very low operation, a stoma and its later closure, a longer stay, or a complication change the total. The office prepares a written estimate once the operation is decided.
Cashless admission is arranged at Apollo Hospital, Bhat where your policy allows it, and the office prepares the pre-authorisation papers; allow a day or two for robotic approval. Ask whether your policy covers robotic surgery and up to what limit, and whether it covers the stoma closure as a separate admission. Bring the policy documents, photo identity, every report with the scans on disc, and a list of current medicines.
Most can, when the plane around the rectum can be kept safely. Tumours grown into other organs, dense scarring or a hostile pelvis may need open surgery, decided at the tumour board.
After a low join, usually a temporary ileostomy that is closed a few months later. A permanent colostomy is needed only when the sphincter itself must be removed.
The MRI decides. Tumours close to the envelope's outer layer, or low tumours, need it first; intermediate tumours may have chemotherapy alone.
Operating too soon on a freshly irradiated pelvis raises the risk of a leak and wound problems. The wait of two to three months is planned.
After a low join, yes, at first. Urgency and frequent motions improve over one to two years with retraining and medicines.
Open the page for your tumour's level from the table above: upper, mid, low or ultra-low.
Shah’s Gastro, Cancer & Robotic Surgery Centre, Gota, Ahmedabad
Consultation, review of scans and pathology reports, second opinions, follow-up and surveillance.
Google: 4.9 · 53 reviews
Apollo Hospital, Bhat, Gandhinagar
Admission, robotic and open surgery, and inpatient care.
Google: 5.0 · 25 reviews
Patients travel for rectal cancer surgery from across Gujarat, southern Rajasthan and western Madhya Pradesh.
Send the pelvic MRI report, the CT report, the colonoscopy or sigmoidoscopy report and the biopsy report ahead of your appointment, so the consultation starts with them already read. Which operation you need, and whether treatment comes before it, is decided at the consultation after examination, and by the tumour board. Call +91-63590-11009 WhatsApp the office
Swasth Parivar: twice a month, practical advice on recovery, diet and warning signs. No advertising. Stop any time.
Your number is used for these updates and for the clinic to reach you. It is never sold or passed on. To stop, reply STOP on WhatsApp.
