Follow-Up Scanning
Surveillance Scanning — by Cancer Type
The scans you need after treatment — and how often — depend on which cancer you had, how it was treated, and how long ago you finished. This reference table sets out general patterns for eight common cancer types, drawn from NCCN and ESMO guidelines.
Medically reviewed by Dr. T. Raghavender Reddy, Medical Oncologist, MBBS · DM (Medical Oncology) · MD (Radiation Oncology) · Last reviewed September 2026
- Different cancers use different scans — Breast cancer follow-up relies on mammography; colorectal uses CT; prostate surveillance centres on PSA rather than imaging.
- Frequency reduces over time — For most cancer types, scans are more intensive in years one and two, then space out if there is no sign of recurrence.
- Some cancers use blood tests, not scans — Prostate surveillance centres on PSA; ovarian cancer uses CA-125 alongside imaging at each visit.
- Schedules are clinician-directed — These are general patterns from guidelines. Your actual schedule is set by your oncologist based on your treatment and individual risk.
17+
Cancer Specialists
on Panel
on Panel
96.9%
Breast Cancer
Survival Rate*
Survival Rate*
15,000+
Patients
Treated
Treated
4.8★
Google Rating
(800+ reviews)
(800+ reviews)
The scan you need depends on your cancer type and when you finished treatment. Most solid tumours are followed with CT or MRI in the first two to five years, alongside regular clinical examination. Your oncologist sets the schedule using NCCN or ESMO guidelines for your specific diagnosis — there is no single answer across all cancers.
CION does PET-CT in Hyderabad from Rs 10,499 — among the lowest published prices in the city, with no hidden charges. Indicative price, as of September 2026.
Why does the scan type change depending on the cancer?
Each cancer type tends to recur in particular places. Colorectal cancer most commonly recurs in the liver and lungs, so CT imaging of those areas is the surveillance focus. Breast cancer most commonly recurs in the breast tissue, so annual mammography is the standard — and CT is not recommended for asymptomatic patients by NCCN.
The scan that is most useful is the one most likely to detect recurrence early for your particular cancer. Ordering a scan not matched to the recurrence pattern adds cost and radiation exposure without improving detection.
Blood and hormone markers add another layer. CEA for colorectal cancer, CA-125 for ovarian cancer, and PSA for prostate cancer can signal a problem before it is visible on imaging — so they are checked at regular intervals alongside or instead of scans.
What scan does each cancer type typically use?
| Cancer type | Scan used | First 2 years | Years 3–5 | Blood or other test |
|---|---|---|---|---|
| Breast (early stage) | Annual mammogram — CT not routine for asymptomatic patients (NCCN) | Annually | Annually | Clinical exam throughout; no blood marker standard |
| Colorectal | CT chest, abdomen and pelvis | Every 6–12 months | Annually to year 5 | CEA every 3–6 months; colonoscopy at year 1 |
| Lung (NSCLC) | CT chest | Every 6–12 months | Annually | None standard |
| Cervical | CT or PET-CT for high-risk; pelvic exam for all | Every 3–6 months | Every 6–12 months | Pap smear as appropriate |
| Prostate (post-treatment) | Bone scan or CT only if PSA rises or symptoms occur | Scan only if clinically indicated | Scan only if clinically indicated | PSA every 3–6 months for 2 years, then 6-monthly |
| Hodgkin lymphoma | CT limited after confirmed complete response (NCCN) | Per treating oncologist | As clinically indicated | None standard |
| Head and neck | CT or MRI | Every 3–6 months | Every 6–12 months | TSH if thyroid was in the radiation field |
| Ovarian | CT abdomen and pelvis | Every 3–6 months | Every 6–12 months | CA-125 at each visit |
PET-CT Partner Centres
PET-CT Scan Centres in Hyderabad
CION offers PET-CT scans through 4 trusted partner PET-CT centres across Hyderabad, so you can choose the one closest to you. Call 18002028726 and we’ll guide you to the earliest available appointment.
PET-CT Centre — Punjagutta
PET-CT Centre — Himayatnagar
PET-CT Centre — Narayanaguda
These are partner diagnostic centres within the CION network. Toll-free booking: 18002028726.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
Radiation Oncologist
Radiation Oncologist
Radiation Oncologist
Hematologist
Interventional Radiologist
Dr. Mohammed Imran
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Get a straight answer from a specialist
45 minutes, your reports reviewed, your questions answered in plain language.
Common questions about your surveillance schedule
Why do scans become less frequent after the first two years?
Recurrence risk is highest in the first one to two years after treatment for most solid tumours. Surveillance is most intensive during that window because detecting a recurrence early — when it is small and localised — gives the most treatment options. As each year passes without a problem, the probability of a recurrence in the next year generally falls, so the interval between scans widens. This is a clinical judgement grounded in evidence, not a cost-saving measure. Your oncologist will tell you if there is a reason to maintain closer follow-up than the standard schedule.
What does 'as clinically indicated' mean in a surveillance plan?
It means there is no fixed scan date — the next scan is ordered when something prompts it, such as a symptom you report, a blood marker that rises, or an examination finding. Prostate cancer surveillance commonly works this way: PSA is checked at regular intervals, and imaging is ordered only if the result is concerning. It does not mean you are being watched less carefully. It means the blood test is more sensitive for early recurrence than a routine scan in that situation, so the scan is held back until it will genuinely add information.
Can I reduce how often I am scanned to lower cost and radiation exposure?
Discuss this with your oncologist rather than deciding alone. For some cancer types, guidelines already recommend the minimum number of scans that the evidence supports. For others — particularly colorectal cancer — the schedule reflects a genuine difference in early recurrence detection if visits are spaced further apart. Radiation from CT scans is real but the dose per scan is small, and your oncologist can put the cumulative exposure in context for your situation. Cost concerns are worth raising directly — your team can explain government scheme eligibility or discuss what is available to you.
Does a PET-CT replace a standard CT for routine surveillance?
Not for most cancer types. PET-CT is the standard for initial staging and treatment response assessment in several cancers, including lymphomas. For routine surveillance of solid tumours in remission, standard CT is what NCCN and ESMO guidance recommends. PET-CT is more expensive, involves a higher radiation dose, and has a higher false-positive rate in the surveillance setting — where the probability of finding active disease is lower. A false positive leads to further investigation that adds cost, radiation and anxiety. Your oncologist will advise if PET-CT is specifically indicated for your follow-up.
What should I do if I have missed a scheduled scan?
Contact your oncology team and reschedule as soon as you can. Missing one scan does not mean a recurrence has been missed — it means there is a gap in the monitoring record. The team will advise whether to continue with the original schedule, bring the next scan forward, or add an interim scan before returning to the usual pattern. Do not wait for the next scheduled appointment to mention it. Call and let them know, so the decision about how to proceed is made by your team rather than left to chance.
Did you know?
For most early-stage breast cancers, NCCN guidelines do not recommend routine CT, bone scan or PET-CT for surveillance in patients without symptoms. Annual mammography and clinical examination are the evidence-based standard.
Scans ordered without a matched clinical reason add radiation exposure and cost without improving outcomes — a finding that has shifted surveillance guidelines for several cancer types over the past decade.
Source: NCCN Clinical Practice Guidelines in Oncology — Breast Cancer
A whole-body PET-CT at CION is Rs 10,499 — among the lowest published prices in Hyderabad — with a free Rs 950 oncologist consultation to talk through your report. Indicative price, as of September 2026.
Explore 62 more Family Support, Myths, Follow-Up and Emergencies topics
Follow-Up & Surveillance Scanning
- Can You Refuse a Follow-Up PET Scan?
- Follow-Up Scanning During Long-Term Treatment
- How Often Will You Need a PET-CT After Treatment?
- Is Routine Surveillance PET Actually Recommended?
- Keeping a Personal Scan Log
- Reducing Radiation Across Years of Surveillance
- Scan-Based vs Symptom-Based Follow-Up
- Surveillance Scanning by Cancer Type: A Reference Table
- The Annual Cost of Cancer Surveillance Scanning
- Transferring Surveillance to a Centre Closer to Home
- What Happens If a Surveillance Scan Shows Something?
- When Can You Stop Having Scans?
Caretaker & Family Guide
- A Printable PET-CT Day Checklist for Families
- After the Scan: What the Family Should Know
- Collecting and Storing the Report and Images
- Coordinating a Scan for a Parent in Another City
- Explaining a Parent's Scan to Children
- Explaining the Scan to an Anxious Patient
- Getting an Elderly Parent to and From the Scan
- Helping Someone Fast Before a PET-CT
- Managing Cost and Payment as a Family
- Preparing Questions for the Post-Scan Consultation
- The Family's Complete Guide to a PET-CT Scan Day
- What the Attendant Can and Cannot Do During the Scan
Emergencies & Red Flags
- Accidental Radiation Exposure: Pregnancy Discovered After a Scan
- Breathing Difficulty During or After a Scan
- Delayed Contrast Reaction Hours After the Scan
- Emergencies Around a PET-CT Scan: What Needs Immediate Care
- Fainting or Collapse at the Scan Centre
- Low Blood Sugar (Hypoglycaemia) During Fasting
- Panic Attack During the Scan
- Severe Contrast Reaction: Recognising It
- What to Do If the Cannula Site Swells or Hurts After
- When to Call the Centre After Your Scan
Myths & Misinformation
- Ayurvedic and Alternative Alternatives to a PET Scan
- Myth: A Normal PET Scan Means You Are Cured
- Myth: A PET Scan Can Cause Cancer
- Myth: A PET Scan Detects Every Cancer
- Myth: A PET Scan Spreads or Worsens Cancer
- Myth: A Positive PET Scan Means You Definitely Have Cancer
- Myth: A Scan From a Cheaper Centre Will Not Be Accepted
- Myth: An Expensive Scan Is Always a Better Scan
- Myth: Eating Sugar Before a Scan Will Show Up Cancer
- Myth: PET Scans Are Only for Terminal Cancer
- Myth: The Tracer Injection Is a Kind of Chemotherapy
- Myth: You Should Avoid Water After a PET Scan
- Myth: You Should Get a PET Scan Every Year to Be Safe
- Myth: You Stay Radioactive for Days After a PET Scan
Scanxiety & Emotional Impact
- Fear of What the Scan Will Find
- Getting Bad News From a Scan Report
- Getting Good News: Why Relief Is Complicated
- Living Between Scans: The Six-Month Rhythm
- Making the Most of Your Post-Scan Consultation
- Recurring Scanxiety in Long-Term Surveillance
- Scanxiety: The Fear Before and After a PET-CT
- Should You Look Up Your Results Online Before the Consult?
- Supporting Someone Through Scan Day
- Telling Family About Scan Results
- The Night Before a PET-CT Scan
- Waiting for PET-CT Results: How to Get Through It
- When a Patient Refuses to Have the Scan
- When to Seek Counselling Around Scans
Your next step
Talk to an oncologist about your scan
Your PET-CT report read by a senior oncologist, explained in plain language, with a free 45-minute consultation.
Common questions
Frequently asked questions
Does every cancer type need a different scan for surveillance?
Yes, because each cancer type tends to recur in different places and at different rates. Breast cancer surveillance centres on mammography because local and regional recurrence in breast tissue is what imaging needs to detect. Colorectal cancer surveillance uses CT of the chest, abdomen and pelvis because the liver and lungs are the most common sites of spread. Using the same scan across all cancers would miss recurrences that the right scan would find — and would add unnecessary procedures where they add no value.
How long does surveillance scanning continue after treatment?
It varies by cancer type. For most solid tumours, the structured surveillance period recommended by NCCN and ESMO runs for five years, with scans becoming less frequent after the first two to three years. After five years, many patients move to annual clinical review without routine imaging — though mammography continues indefinitely for breast cancer. For some blood cancers and cancers with late recurrence patterns, surveillance may continue beyond five years. Ask your oncologist when your scheduled imaging is expected to end and what follows.
What is the difference between a surveillance scan and a diagnostic scan?
A surveillance scan is done on a schedule in a patient with no symptoms and no signs of recurrence — it is looking for a problem before it causes symptoms. A diagnostic scan is ordered because something is wrong: a symptom, an abnormal blood test, or a clinical finding. The two are interpreted differently. A surveillance scan in a patient who feels well has a low probability of finding active disease. A diagnostic scan in a patient with symptoms has a much higher one, and the radiologist reports it with that context in mind.
Can I request more frequent scans if I am anxious about recurrence?
You can and should raise your anxiety with your oncologist — that is an important part of the conversation. Whether more frequent scanning helps is a different question. Guideline-recommended intervals reflect the point at which scanning has been shown to be most useful, and scanning beyond that does not generally improve outcomes. More frequent scans can increase false-positive findings, which lead to further procedures that themselves cause anxiety. If worry about recurrence is significantly affecting your daily life, your oncologist can refer you to psychological support alongside your surveillance plan.
Is PET-CT better than CT for routine follow-up after treatment?
Not for most cancer types. PET-CT is established for initial staging and treatment response assessment — particularly in lymphomas. For routine surveillance of patients in remission, NCCN and ESMO guidance for most solid tumours recommends standard CT. PET-CT is more sensitive but also has a higher rate of false-positive results in a population where most patients do not have active disease. A false positive means further investigation, which adds cost, radiation and anxiety without benefit. Your oncologist will recommend PET-CT when your situation specifically calls for it.
What happens if a follow-up scan finds something?
The next step depends entirely on what is found. A small indeterminate finding — a slightly enlarged lymph node, a shadow in the lung — will usually mean a repeat scan in a few weeks to see whether it changes. A finding that looks clearly abnormal may lead to a biopsy to confirm whether it is recurrence. Your oncologist will explain the finding and the plan before any next steps are taken. The goal of surveillance is to find a recurrence small enough that treatment options remain broad — which is why regular follow-up matters even when you feel well.