Can You Get a Second Opinion — Before Chemotherapy Starts?

For the large majority of diagnoses, a short pause for a second review does not meaningfully affect the outcome of treatment. The exception is when your oncologist has indicated clinical urgency — a very rapidly growing tumour, or a specific finding that makes delay unsafe. If no urgency has been communicated to you, taking a short time to have the plan reviewed is a standard part of careful decision-making, not a risk. Share any stated urgency with the second reviewer so they can respond appropriately.

Sometimes it confirms the original plan exactly, and sometimes it identifies something that changes it. ASCO and NCCN guidance acknowledges that second opinions in oncology result in meaningful changes — to the diagnosis, the staging, the regimen, or the testing — often enough that seeking one is standard practice at specialist centres. A confirmation is not a wasted review. It is the information that lets you start treatment with confidence rather than doubt.

The most important documents are your pathology report, imaging scans on a disc or digital transfer, blood and tumour marker results, and a written summary of the proposed treatment plan. Your oncologist's team can prepare these for you. You do not usually need to repeat any procedure. If the reviewing centre needs your biopsy slides rather than just the written report, a request can be made to transfer them temporarily.

Yes. You can request a second review at any CION centre. The same documents your original team has prepared are the starting point. CION oncologists will review the pathology, staging, and proposed plan, and explain their assessment and any differences from the first recommendation. If you are already a patient at one CION centre, your team can facilitate a review at another centre within the network.

You can ask your oncologist directly which guideline body their plan follows — NCCN, ESMO, ASCO, or ICMR guidelines are the most commonly referenced in India — and ask how your specific results fit the recommended criteria. You do not need to understand the guideline yourself to ask the question. A second reviewer will independently assess whether the proposed plan aligns with current evidence, which is one of the main reasons a review is useful.

No. Many people seek a second opinion after starting, and the findings still matter. If something concerns you — the response is not what was expected, or you have received new information about your diagnosis — a review can still influence the remaining cycles or what comes next. Tell the reviewing oncologist what you have already received, so they can assess from where you are now rather than from the original starting point.