Gynaecological Cancer Imaging
PET-CT for Endometrial and Uterine Cancer — What It Shows and When It Is Needed
A PET-CT scan is ordered after your biopsy has confirmed the diagnosis. Its job is to show whether the cancer has spread beyond the uterus, so your team can plan how far the treatment needs to reach.
Medically reviewed by Dr. T. Raghavender Reddy, Medical Oncologist, MBBS · DM (Medical Oncology) · MD (Radiation Oncology) · Last reviewed September 2026
- Ordered after diagnosis — PET-CT is a staging scan. It is not used to diagnose cancer — your biopsy does that first.
- Maps distant spread — It looks for cancer in lymph nodes throughout the body and in distant organs such as the lungs or liver.
- MRI is also needed — MRI shows how deeply the tumour has grown into the uterine wall — detail that PET-CT cannot reliably provide.
- Not suitable in pregnancy — If there is any chance you may be pregnant, tell your team before this scan is booked.
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PET-CT is used after a confirmed diagnosis to find out whether endometrial or uterine cancer has spread to lymph nodes or distant organs. MRI is usually ordered alongside it — PET-CT maps distant spread while MRI shows local extent within the pelvis. The two scans answer different questions and are not alternatives to each other.
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.
When is PET-CT used for endometrial or uterine cancer?
PET-CT is ordered after your biopsy has confirmed a cancer diagnosis, usually before surgery or treatment begins. It maps whether cancer has moved beyond the uterus — to pelvic lymph nodes, nodes along the main abdominal blood vessels, or distant organs such as the lungs or liver.
Your oncologist uses this information to decide the scope of surgery, whether radiation is part of the plan, and whether systemic treatment such as chemotherapy is also needed.
NCCN guidelines support PET-CT staging for higher-risk endometrial cancers — those with aggressive histology or features that raise the probability of spread beyond the uterus.
Is MRI also needed, or does PET-CT replace it?
MRI and PET-CT are complementary. They answer different questions, so one does not replace the other.
MRI shows local extent — how deeply the tumour has grown into the uterine wall, whether it involves the cervix, and how close it sits to the bladder or bowel. This detail is critical for surgical planning and cannot be reliably obtained from a PET-CT.
PET-CT shows distant spread. It surveys the whole body in one session and detects metabolically active disease in lymph nodes well beyond the pelvis and in distant organs.
A practical limitation: the bladder concentrates the FDG tracer and appears very bright on PET. Structures immediately around the bladder can be obscured by this signal, which is one reason MRI remains essential for pelvic detail.
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.
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What else should I know about this scan?
What does PET-CT actually detect?
PET-CT combines two scans in one session. A small amount of a radioactive glucose tracer called FDG is given as an injection. Cancer cells tend to use more glucose than normal tissue, so they absorb more tracer and appear as bright spots. The CT component provides the anatomical map — showing where each bright area sits in relation to lymph nodes and organs. Together they show where in the body metabolically active disease is present.
What does it mean if the scan shows spread?
Finding spread to lymph nodes or other organs changes the FIGO stage assigned to the cancer, and stage shapes the treatment recommendation. Your oncologist will explain what was found, what stage it represents, and what the next steps are. It is reasonable to ask for that explanation in plain language and to bring a family member to the results appointment.
Can I have this scan if I am pregnant?
No. PET-CT uses ionising radiation from the CT component and a radioactive tracer. Both carry risk to a developing foetus. This is a firm clinical contraindication — not a precaution that can be waived. If there is any possibility you may be pregnant, tell your team before the scan is booked. If you are planning a pregnancy, discuss the timing of any imaging with your oncologist before proceeding.
Why does the bladder look so bright on the scan?
The FDG tracer is processed by the kidneys and concentrated in urine, so the bladder is always intensely bright on a PET scan. This is normal and expected — it is not a sign of disease in the bladder. Your radiologist knows this and accounts for it when reading the scan. It is one reason MRI is also requested: it gives clearer detail of structures immediately around the bladder that the tracer signal can obscure.
What happens after the scan?
A radiologist reads the images and writes a report, usually within two to four working days. Your oncologist will go through the report with you and explain what was found. If you have not been contacted within a week of the scan, ask your team whether the report has been received. The report is what moves your treatment plan to the next step.
Did you know?
How deeply endometrial cancer has grown into the uterine wall — called myometrial invasion — is one of the strongest predictors of lymph node spread.
This single MRI finding can determine whether a full-body PET-CT is warranted at all, which is why MRI is often the first imaging step rather than an afterthought.
Source: ESMO Clinical Practice Guidelines: Endometrial 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.
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Common questions
Frequently asked questions
Does a PET-CT scan confirm that I have cancer?
No. PET-CT detects areas of high metabolic activity, which can result from cancer but also from infection or inflammation. Diagnosis must come from a biopsy — tissue examined by a pathologist under a microscope. PET-CT is a staging tool, ordered after the diagnosis is established. If an unexpected area shows activity on the scan, your team may recommend a separate biopsy of that site before acting on it.
Do I need to fast before the scan?
Yes. You will be asked to fast for several hours before the appointment — your scanning centre will give the exact instruction. Fasting keeps blood glucose low, which improves how well the tracer is taken up by cancer cells. If you have diabetes, tell the team when you book, because the preparation differs for diabetic patients. Ask whether to take any morning medication as usual or to delay it.
How long will the appointment take?
Allow three to four hours in total. After the tracer injection you rest quietly for around an hour, then the scan itself takes approximately thirty minutes. Most patients travel home independently. You will be asked to avoid close contact with pregnant women and young children for a few hours after the scan, while the tracer remains briefly active.
Can PET-CT miss cancer in a lymph node?
Yes. PET-CT has a detection threshold below which small deposits of disease may not show. A lymph node containing only a very small number of cancer cells can appear normal on any imaging scan. This is why your surgeon may remove lymph nodes during the operation for laboratory examination — the pathologist's assessment of the tissue adds information the scan cannot provide.
Is there radiation involved?
Yes — two types. The CT component uses X-ray radiation, and the FDG tracer is mildly radioactive. The combined dose is within the range considered acceptable for diagnostic imaging in adults with cancer. Pregnancy is a firm contraindication because of this exposure. If you have concerns about radiation, discuss them with your oncologist before the scan is scheduled.
Can a PET-CT show whether treatment is working?
PET-CT can be used for response assessment after treatment, to see whether previously active areas have settled. Whether a follow-up scan is appropriate for your situation depends on your treatment type and how your disease presented at the start. Not every patient needs one. Your team will tell you whether a response-assessment PET-CT is part of your planned follow-up.