Understanding your scan report
Incidental Findings on a PET-CT Scan — What They Are and What Happens Next
Seeing an unexpected finding in your cancer scan report is frightening. An incidental finding does not automatically mean more cancer — but it does need your oncologist to review it and decide whether a follow-up scan is needed or whether it can be safely watched over time.
Medically reviewed by Dr. T. Raghavender Reddy, Medical Oncologist, MBBS · DM (Medical Oncology) · MD (Radiation Oncology) · Last reviewed September 2026
- Not the reason for your scan — An incidental finding appears in an organ not being examined, detected by chance during imaging.
- Common on full-body imaging — Incidental findings are reported in a significant proportion of full-body PET-CT scans done for cancer.
- Outcome varies by finding — Some need prompt investigation. Many are monitored with a follow-up scan. Some need no action at all.
- Your oncologist decides — The report describes what the scanner saw. What happens next is a clinical decision made by your treating team.
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)
An incidental finding is something a PET-CT picks up in an organ not being examined — a thyroid nodule, an adrenal gland change, a liver spot. It has nothing to do with why the scan was ordered. Your oncologist reviews each one to decide whether it needs follow-up, monitoring, or no action at all.
CION's PET-CT scans in Hyderabad start at Rs 10,499 — among the lowest published prices in the city, with no hidden charges. Indicative price, as of September 2026.
What is an incidental finding on a PET-CT, and how common are they?
A PET-CT scans a large part of your body. When it detects something in an organ that was not being examined — a nodule in the thyroid, a change in the adrenal gland, a spot in the liver — that finding is called incidental. It was found by chance, not because anyone suspected something there.
Incidental findings are reported in a significant proportion of full-body PET-CT scans, particularly in people being investigated for cancer. The majority turn out to be benign — cysts, old scarring, or anatomical variations that were always present. A proportion need a follow-up scan to characterise further.
Not all incidental findings require action. Your oncologist reviews each one alongside your medical history, the appearance on imaging, and any earlier scans you have had. That review — not the report alone — decides what happens next.
What should I ask my oncologist about an incidental finding?
- Ask what the finding is in plain language, not the medical term alone.
- Ask whether it is likely to affect your current treatment plan.
- Find out whether a follow-up scan is recommended and, if so, how soon.
- Ask whether the finding appeared on any earlier scan you have had.
- Find out who coordinates the next step — your oncologist or a different specialist.
- Tell your team about any symptoms you have noticed in that area, however mild.
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.
You do not have to work this out alone
A 45-minute consultation with a specialist who treats this every week.
What do the words in my scan report actually mean?
- Incidentaloma
- A finding detected by chance on a scan, unrelated to the reason it was requested. The name tells you nothing about whether it is serious.
- Indeterminate
- The radiologist cannot say from this scan alone whether the finding is harmless or significant. A follow-up scan with different imaging is usually the next step.
- FDG avid / uptake
- How strongly a tissue absorbs the radioactive tracer used in PET imaging. Higher uptake can indicate faster cell activity, but many normal and benign tissues also show uptake.
- Hypodense lesion
- An area appearing darker than surrounding tissue on the CT part of the scan. Often a benign cyst, but the borders and shape matter more than density alone.
- SUV (Standardised Uptake Value)
- A number expressing how much tracer an area absorbed. Your team interprets it in the context of the whole scan, not as a standalone figure.
What makes an incidental finding more or less likely to need follow-up?
| Factor | More likely to need follow-up | Less likely to need immediate action |
|---|---|---|
| PET activity (FDG uptake) | Clearly elevated above surrounding tissue | Low or absent |
| Appearance on CT | Irregular borders or complex internal structure | Smooth, round, contains fluid or fat |
| Size | Larger than the normal range for that tissue type | Very small, within normal anatomical variation |
| Compared with a prior scan | New finding, or larger than on an earlier scan | Stable and unchanged across previous scans |
| Relation to your primary cancer | Located where spread from your cancer is possible | Clearly a different tissue type from your primary cancer |
What happens after an incidental finding is flagged in my report?
Does an incidental finding mean my cancer has spread?
Not necessarily. Spread of cancer — metastasis — is described differently in your report and is evaluated on separate criteria. An incidental finding is, by definition, something unrelated to the primary reason the scan was ordered. Your radiologist and oncologist are trained to distinguish between the two. If you are unsure which category your finding falls into, ask your oncologist to show you that section of the report and explain it in plain language.
Will following up the finding delay my cancer treatment?
In most cases, no. Follow-up for incidental findings is typically arranged alongside your cancer treatment, not instead of it. If a finding needs urgent attention, your team will say so explicitly and adjust your schedule accordingly. In the large majority of cases, the oncology treatment plan continues while the incidental finding is investigated in parallel. If you are concerned about timing, raise it with your oncologist at your next appointment.
My report says 'cannot exclude malignancy' — is that a cancer diagnosis?
No. That phrase means the radiologist cannot rule malignancy out from this scan alone — it is not a diagnosis. It is a prompt for further investigation, usually a different type of imaging. Many findings described this way turn out to be benign after further review. Your oncologist will explain what the follow-up involves and give you a realistic sense of what to expect at each stage.
The report lists several incidental findings. Does more findings mean more risk?
Not necessarily. Multiple incidental findings on a full-body PET-CT are common and usually reflect the sensitivity of the scanner, not a sign that something is wrong in many places. Each finding is evaluated separately by your team. Some may warrant no follow-up at all. Your oncologist will tell you which ones need investigation, in what order, and why.
Will I need a biopsy to find out what the finding is?
Most incidental findings are characterised through imaging alone — a follow-up MRI, CT, or ultrasound — without tissue sampling. A biopsy is recommended only when imaging cannot provide a clear enough answer and the result would change your care. Your oncologist or the relevant specialist will explain clearly if that applies to your specific finding and what the procedure involves.
CION does PET-CT in Hyderabad from Rs 10,499 — among the lowest published prices in the city — including an oncologist-reviewed report and a free Rs 950 consultation. Indicative price, as of September 2026.
Explore 94 more Understanding Your PET-CT Report topics
Incidental Findings
- A Second Unrelated Cancer Found on PET-CT
- An Incidental Bone Finding on PET-CT
- An Incidental Breast Finding on PET-CT
- An Incidental Kidney or Adrenal Finding
- An Incidental Liver Lesion on PET-CT
- An Incidental Lung Nodule Found on PET-CT
- An Incidental Prostate Finding on PET-CT
- An Incidental Thyroid Nodule on Your PET Scan
- Do All Incidental Findings Need Investigation?
- Focal Bowel Uptake: Could It Be a Polyp?
- Incidental Findings on a PET-CT Scan: What They Are
- Incidental Heart Findings on a Cancer PET Scan
- The Cost of Chasing an Incidental Finding
- What to Ask Your Doctor About an Incidental Finding
False Positives, False Negatives & Pitfalls
- Bladder, Kidney and Ureter Activity on PET
- Bone Marrow Uptake After Growth Factor Injections
- Bowel Uptake: Normal, Inflammation or Something Else?
- Brown Fat Uptake: A Common Cause of Confusing Findings
- Does a Suspicious PET Finding Always Need a Biopsy?
- Getting a Second Read of Your PET-CT Images
- How Often Is a PET-CT Scan Wrong?
- Muscle Uptake After Exercise or Injections
- Thymic and Rebound Uptake in Younger Patients
- Uptake After Radiotherapy: Inflammation or Disease?
- Uptake at a Biopsy or Surgery Site
- What Causes a False Negative on a PET Scan?
- What Causes a False Positive on a PET Scan?
- What Happens If Two Scans Disagree?
- Which Cancers Do Not Show Well on PET-CT?
- Why the Brain Always Lights Up on PET
Infection, TB & Inflammation on PET
- Can Tuberculosis Look Like Cancer on a PET Scan?
- Dental Infection and Jaw Uptake on PET
- Fungal Infection and Abscess on PET-CT
- How Long Should You Wait After an Infection Before a PET Scan?
- If It Might Be Infection, What Test Comes Next?
- Inflammation After Injections, Vaccines and Cannulas
- Old Healed TB and Calcified Nodes on PET-CT
- PET-CT for Fever of Unknown Origin
- PET-CT for Suspected Infection in Implants and Prostheses
- PET-CT for Vasculitis and Inflammatory Conditions
- Pneumonia and Recent Chest Infection on PET
- Sarcoidosis on PET-CT: The Great Mimic
- TB or Cancer? How Doctors Tell Them Apart
- Thyroid Uptake on PET: Diffuse vs Focal
Reading Your Report: Core Terms
- 'Cannot Be Excluded' and Other Cautious Phrases
- 'Deauville Score' on a Lymphoma PET Report
- 'FDG Avid': What It Means on Your Report
- 'Hypermetabolic': What the Word Actually Means
- 'Hypometabolic' and 'Photopenic' Findings
- 'Impression' vs 'Findings': Which Section Should You Read?
- 'Interval Change' and 'Stable Since Previous Study'
- 'Krenning Score' on a DOTANOC or DOTATATE Report
- 'Lymphadenopathy' on Your PET Report
- 'Metabolically Active Disease': What It Tells You
- 'Metastasis' and 'Distant Spread' on Your Report
- 'Mildly FDG Avid' vs 'Intensely FDG Avid'
- 'No Abnormal FDG Uptake': Is That a Clear Scan?
- 'Physiological Uptake': Normal Areas That Always Light Up
- 'Residual Disease' vs 'Complete Metabolic Response'
- 'Sub-Centimetre Node' and Why Size Matters on PET
- 'Suspicious for Malignancy': How Certain Is That?
- How Long Does a PET-CT Report Take?
- How to Read Your PET-CT Report: A Section-by-Section Guide
- Should You Read Your Own PET-CT Report Before the Consult?
- TNM Staging on a PET-CT Report
- Why Your Report Mentions the Liver and Blood Pool
Response Assessment Scores & Criteria
- Complete Metabolic Response: What It Means
- Deauville Score 1 to 5: The Lymphoma Scale Explained
- End-of-Treatment PET Scan: What It Decides
- How Doctors Judge Whether Treatment Is Working on PET-CT
- Interim PET Scan During Chemotherapy: Why It Is Done
- Metabolic Response vs Size Response: Why They Differ
- PERCIST Criteria: How Metabolic Response Is Measured
- Partial Metabolic Response: Is That Good Enough?
- Progressive Metabolic Disease: What Happens Next
- RECIST vs PERCIST: Size vs Activity
- Stable Metabolic Disease: Good News or Bad?
- Tumour Flare and Pseudoprogression on PET
- What Is a Deauville 3 and Why Is It Ambiguous?
- Why the Scan Says One Thing and You Feel Another
SUV Values Explained
- Comparing SUV Between Two Scans: Is It Meaningful?
- Does a Higher SUV Mean a More Aggressive Cancer?
- Factors That Change Your SUV Reading
- High SUV but Not Cancer: When the Number Misleads
- Is My SUVmax of 4 High? Reading Your Specific Number
- Low SUV but Still Cancer: The PET-Negative Cancers
- SUV in Non-Cancer Conditions
- SUVmax, SUVmean and SUVpeak: What Is the Difference?
- What Is SUV on a PET Scan?
- What Is a Normal SUV Value?
- What SUV Value Indicates Cancer?
- Why Blood Sugar Changes Your SUV Result
- Why Did My SUV Go Down but Not to Zero?
- Why Did My SUV Go Up After Treatment?
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
What kinds of incidental findings are most common on a PET-CT?
Thyroid nodules, adrenal gland lesions, small lung nodules, benign liver cysts, and incidental lymph node changes are among the most frequently reported. Exact frequency varies by the cancer type being investigated and the sensitivity of the scanner. Most are ultimately found to be benign after review or further imaging. Your oncologist will tell you which category your finding falls into and what that means for your care.
How quickly will I find out whether the incidental finding is serious?
Timing depends on the finding and how urgently your team considers it. Some are followed up with a scan within a few weeks. Others are reviewed at your next scheduled oncology appointment if they appear unlikely to need prompt attention. If you have not been told when to expect follow-up, ask your oncologist directly — a clear answer about the timeline is a reasonable thing to expect.
Should I look up the finding online before my next appointment?
You can, but online searches for radiological terms tend to surface the most serious outcomes first, regardless of how common those outcomes actually are. What you read is not calibrated to your age, history, or the specific appearance of your finding. Use what you find as questions to ask your oncologist, not as conclusions about your case. Asking your team to explain the finding in plain language is a more reliable path.
Will an incidental finding affect my insurance or health coverage?
This depends on your insurer and the nature of the finding. Coverage for follow-up investigations can vary. If you have concerns, ask your insurance provider before additional investigation is started so you understand what will and will not be covered. Your oncologist's team may be able to help with the documentation required for a coverage query.
Is it worth getting a second opinion about the incidental finding?
A second opinion is always reasonable, particularly if the recommended follow-up is a significant investigation or if the finding remains uncertain after initial review. You can ask your oncologist to arrange a specialist review, or request that your imaging and report be reviewed at a centre with relevant expertise. A responsible oncologist will support a second opinion and can help facilitate one.
What should I tell my oncologist at my next appointment?
Mention any symptoms you have noticed in or around the area of the finding, even if they seem unrelated. Bring a copy of the report if you have one, or write down the name of the finding as it appears in the report. Ask directly whether it needs attention before your next scheduled appointment or can wait. Tell your team about any other specialist you have already seen about this finding, so your care stays coordinated.