Associate Director & Unit Head, Surgical Oncology, Max Hospital, Gurgaon
Part 8 of 10 in Diagnosis and Management of Rectum Cancer
When Is Chemotherapy or Radiotherapy Needed Before Rectal Cancer Surgery?
September 5, 2026
Whether a colorectal cancer patient goes straight to surgery or receives treatment beforehand depends on the stage and location of the tumour.
Colon Cancer: Surgery Comes First
For colon cancer in stages one through three, there is no role for chemotherapy before surgery. Treatment begins with the operation itself.
Rectal Cancer: When Treatment Comes Before Surgery
For lower rectal cancer, neoadjuvant chemotherapy and radiotherapy are used when the tumour has grown through the muscle layer, known as T3 disease, or when lymph nodes are involved. Early-stage disease, T1 or T2 with no node involvement, goes directly to surgery.
Stage 4 Disease
Metastatic disease is treated mainly with chemotherapy. In the limited cases where the liver or peritoneum alone are involved, patients typically receive about three months of chemotherapy, followed by surgery, followed by a further three months of chemotherapy.
← Managing Stage 4 Colorectal Cancer: Liver and Peritoneal Metastases | Series index | Colorectal Cancer Screening: Who Should Get Tested and When →
This article is based on a Jivo Masterclass session conducted by Dr. Kaushal Kishore Yadav, Associate Director & Unit Head, Surgical Oncology, Max Hospital, Gurgaon, India. The article has been summarised with the assistance of an AI tool from the original masterclass recording. Watch the full Masterclass recording
This guide is based on a live Jivo Masterclass: Dr. Kaushal Kishore Yadav taught doctors across Africa on June 15, 2025.
FROM THE LIVE Q&A
Moderator
Relayed a case: a patient with sigmoid colon cancer who has liver metastases only. How should a case like this be managed?
Dr. Kaushal Kishore Yadav
If the liver metastases are limited, roughly one to three, and can be completely removed, liver metastasectomy can be done at the time of the primary surgery or as a second stage. If the liver is diffusely involved in both lobes, there is no role for curative surgery and only palliative chemotherapy is appropriate. If instead there is peritoneal-only spread with no other site involved, cytoreductive surgery combined with HIPEC gives a survival advantage of about fifty percent in colorectal cancer, provided the disease is limited and combined with chemotherapy before and after.
Book a Consultation with Dr. Kaushal Kishore Yadav
Book on WhatsAppOr message us on WhatsApp: +91 98182 98669
Frequently Asked Questions
Explained what an online OPD is, for doctors wanting to bring a relevant patient to Dr. Yadav.▼
When a Jivo doctor partner has a relevant patient, they collect the case details and share the information with the Jivo team in advance. The patient is invited to the partner doctor's own clinic, where Dr. Yadav then joins the consultation by video call, so the consultation is guided jointly by doctors in both India and Africa.
Relayed a French-speaking participant's request: will the session recording and presentation be shared afterward?▼
Yes. The webinar recording link will be shared with participants, and Dr. Yadav's presentation, in English, will also be shared.
Many doctors at a first or second-level hospital see colorectal cancer patients they cannot treat, and even the most advanced hospital available to them locally cannot treat these cases either. What should a doctor in this position do?▼
Nothing stops a doctor from referring the complex case to an Indian oncologist in parallel, so the patient has a second treatment pathway. Many patients from African countries who present to India face the same underlying problem: the evaluation, diagnosis and route to treatment usually takes a long time in the home country, and by the time they present to us the disease is already at an advanced stage, sometimes stage four with limited options.
Confirmed that no CT scan is available for him to order at his level-one facility. What workup can still be done in that situation?▼
For a patient with a change in bowel habit and an otherwise unexplained low haemoglobin level, send a colonoscopy first. Do a colonoscopy and CT scan whenever there is real suspicion, and don't delay. Even at a primary level, a fecal occult blood test can be done; it is not very specific and may miss some cases, but it can still help.
Shared what is available at his own facility: a fecal occult (or immunochemical) blood test can be sent as a general surgeon at his primary or general hospital, but what happens beyond that?▼
That test is the only early reading that can be done at that level; genetic-level investigation is not available in that setup. For colonoscopy, the patient has to go to a tertiary hospital and bring the results back. At least the fecal occult blood test is available, and even though it is not very specific, it can help catch some cases.
Does colon cancer need chemotherapy before surgery?▼
No. For colon cancer in stages one through three, there is no role for chemotherapy before surgery; treatment begins with the operation itself.
When is neoadjuvant chemoradiotherapy used for rectal cancer?▼
When the tumour has grown through the muscle layer (T3 disease) or lymph nodes are involved; early-stage T1 or T2, node-negative disease goes directly to surgery.
How is stage 4 colorectal cancer with limited liver or peritoneal spread treated?▼
Typically about three months of chemotherapy, followed by surgery, followed by a further three months of chemotherapy.
In This Series: Diagnosis and Management of Rectum Cancer
- 1.Diagnosis and Management of Rectum Cancer
- 2.Warning Signs and Risk Factors for Colorectal Cancer
- 3.The Diagnostic Workup for Colon and Rectum Cancer: Tests, Scans and Staging
- 4.Sphincter-Preserving Surgery for Low Rectal Cancer
- 5.Complete Mesocolic Excision with Central Vascular Ligation for Colon Cancer
- 6.Open, Laparoscopic and Robotic Surgery for Colon and Rectum Cancer
- 7.Managing Stage 4 Colorectal Cancer: Liver and Peritoneal Metastases
- 8.When Is Chemotherapy or Radiotherapy Needed Before Rectal Cancer Surgery?
- 9.Colorectal Cancer Screening: Who Should Get Tested and When
- 10.Referring a Colorectal Cancer Patient for Treatment in India