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PAEDIATRIC CANCER SURVIVORSHIP
Fertility after childhood cancer treatment — what parents ask most
If your child has finished cancer treatment, it is natural to start thinking about their future — including whether they will be able to have children one day. Many survivors do go on to build families. The answer depends on the treatments used, the child's age, and early planning. Our team walks this journey with every family, from diagnosis through long-term follow-up.
Medically reviewed by the CION Paediatric Oncology Team · Last reviewed June 2026
- Honest answers — we explain fertility risk clearly, without false promises or false alarm
- Coordinated care — oncologists and reproductive specialists working together, not separately
- Long-term follow-up — structured survivor check-ups that include hormonal and reproductive health
- 45-minute consultations — enough time to discuss your family's situation without feeling rushed
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SURVIVORSHIP & LATE EFFECTS
Fertility after child cancer — why this question matters now
When your child was diagnosed, your focus was entirely on getting them through treatment. Now that they are on the other side, it is completely natural to look ahead — to school, to friendships, to a life that includes all the things other children take for granted. For many parents, that future includes the hope that their child will one day start a family of their own.
Fertility after childhood cancer treatment is a subject that medicine takes very seriously. Some treatments — particularly certain types of chemotherapy and radiation to the pelvis or brain — can affect the organs and hormones that control reproduction. The degree of risk varies widely depending on which treatment was used, how much was given, and the child's age and sex at the time.
The important message for families is this: many survivors do have children without difficulty. Others need medical support to conceive. And for some, fertility preservation steps taken before or during treatment can make a significant difference. A structured survivor follow-up plan — one that includes monitoring hormonal health as your child grows — puts your family in the best position to understand and act on what is possible.
This page explains what parents most commonly need to know: which treatments carry risk, what signs to watch for, how assessments work, and how CION's coordinated survivor care brings the right specialists together for your child's future.
Did you know?
International guidelines recommend that fertility risk be discussed with every family before childhood cancer treatment begins — not after. Organisations such as ASCO and the International Society of Paediatric Oncology (SIOPE) include fertility preservation counselling as a standard part of care planning, because some options are only available before treatment starts. Raising this question early gives families more choices, not fewer.
TREATMENT & FERTILITY RISK
Which treatments can affect fertility after child cancer?
Not all cancer treatments carry the same risk to reproductive health. Below is a plain-language guide to the three main categories, so you can have an informed conversation with your child's oncologist.
Chemotherapy
Alkylating agents carry the highest risk
A group of chemotherapy drugs called alkylating agents — used to treat leukaemia, lymphoma, sarcomas, and some brain tumours — are among the treatments most strongly linked to reduced fertility. They work by damaging rapidly dividing cells, which includes the cells that produce eggs and sperm. Higher total doses increase the risk. Many other chemotherapy drugs carry lower or minimal fertility risk. Your oncologist can tell you whether your child's regimen included alkylating agents and in what doses.
- Risk depends on drug type and total dose
- Both ovarian and testicular function can be affected
- Some effects may be temporary; others are permanent
Radiation Therapy
Location of radiation matters most
Radiation affects fertility in two ways. When directed at or near the pelvis or lower abdomen, it can directly damage the ovaries or testes. When directed at the brain — specifically the hypothalamus and pituitary gland, which control hormone production — it can disrupt the hormonal signals that govern puberty and reproductive function. Radiation to the spine can also scatter dose to nearby reproductive organs. Modern radiation planning aims to protect these structures wherever treatment goals allow.
- Pelvic radiation carries the highest direct gonadal risk
- Cranial radiation can cause hormonal changes over years
- Dose and field size both affect the degree of risk
Surgery
Only relevant when the tumour involves reproductive organs
Most childhood cancer surgery does not involve reproductive organs. When tumours arise in or very close to the ovaries, uterus, testes, or nearby structures, surgery may affect fertility. Even in these cases, surgical teams aim to preserve as much healthy tissue as possible. If your child's surgery involved these areas, your oncologist will have discussed the implications at the time, and a survivor follow-up assessment can clarify the current picture.
- Relevant mainly for gonadal tumours (ovarian, testicular) and pelvic cancers
- Fertility-sparing approaches used wherever oncologically safe
- Discuss the surgical report with your follow-up specialist
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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
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Your child's future matters as much as their treatment
Survivor care includes monitoring reproductive health as your child grows. Our team coordinates between oncology and specialist services so nothing is missed.
THE ASSESSMENT PROCESS
How we assess fertility in a childhood cancer survivor
A structured long-term follow-up plan — ideally one based on your child's specific treatment history — is the most reliable way to understand whether fertility has been affected. Here is what that process typically involves.
01
Treatment history review
We start by reviewing the original diagnosis, the chemotherapy regimens used (including drug names and total cumulative doses), radiation fields and doses, and any surgery to the abdomen or pelvis. This review tells us how much fertility risk your child was exposed to — which then guides what monitoring is most important as they grow.
02
Puberty and growth monitoring
For children who have not yet entered puberty at diagnosis, tracking how puberty progresses is an important early signal of reproductive health. Delayed or absent puberty, or signs that puberty has stalled, can indicate that hormonal pathways have been affected by treatment. Regular check-ups — typically every 6 to 12 months during the expected years of puberty — allow early identification of any concerns.
03
Hormone blood tests
A blood panel measuring FSH (follicle-stimulating hormone), LH (luteinising hormone), and oestrogen or testosterone gives a clear picture of whether the hormonal axis responsible for reproduction is functioning normally. These tests are straightforward, can be done at any age, and are a routine part of survivor follow-up when the treatment history suggests risk.
04
Additional testing in adulthood (when appropriate)
When the survivor reaches adulthood and is thinking about having children, more specific testing becomes possible. For male survivors, a semen analysis provides direct information about sperm count and quality. For female survivors, an anti-Müllerian hormone (AMH) test can indicate ovarian reserve. These tests, combined with the earlier monitoring record, give the reproductive specialist the clearest possible picture.
05
Referral to reproductive medicine if needed
If assessments indicate that fertility has been affected, we coordinate a referral to a reproductive medicine specialist who has experience working with cancer survivors. Options such as assisted reproduction — including IVF and donor pathways — exist for many people in this situation. What matters is knowing early, so that options can be explored when the time is right for the individual.
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HOW CION HELPS
Coordinated survivorship care — what sets our approach apart
Survivorship care is not a single appointment — it is a long-term relationship between your family and a team that understands both the cancer that was treated and the life your child is building. Here is what our coordinated approach includes.
Tumour board for every survivor
Long-term follow-up decisions are reviewed by a multi-disciplinary team — including your child's oncologist, an endocrinologist, and where appropriate, a reproductive specialist. One team, coordinated — not separate referrals that never talk to each other.
Structured follow-up schedule
We build a follow-up plan that is specific to your child's treatment history and the late effects they are most at risk of. Fertility-related monitoring is built in — not an afterthought. Check-ups are scheduled at the right intervals as your child grows through puberty and into adulthood.
Honest, compassionate conversations
Fertility is a sensitive subject, and we take care with how we discuss it. You will never feel rushed — our 45-minute consultations give families enough time to ask every question, understand what has been found, and explore what the options are without pressure.
Early action when it matters
If hormonal tests suggest that the reproductive system needs support — for example, if puberty is delayed — hormone therapy can be started early. Early intervention preserves more options. We flag these situations as part of regular follow-up, rather than waiting until a survivor is trying to conceive and finding out for the first time.
Transparent on costs
We believe families deserve clarity about what tests are needed and why — and what they cost. We do not recommend unnecessary investigations. Where insurance or Aarogyasri/CGHS coverage applies to follow-up care, our team will help you understand and use it.
Links to the CION paediatric cancer hub
Fertility is one of many late effects we monitor. Learn about the full spectrum of paediatric cancer survivorship at CION, or explore our pages on late effects of childhood cancer treatment and growth and height after childhood cancer.
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Common questions
Fertility after childhood cancer — parents' most common questions
Can a childhood cancer survivor have children when they grow up?
Many childhood cancer survivors do go on to have children. Whether this is possible depends on the type of cancer, the treatments used, and the age of the child at the time of treatment. Some survivors have no fertility problems at all. Others may need medical support to conceive. A fertility assessment after treatment completion can give your family a clearer picture. The earlier any concerns are identified, the more options are usually available.
Which childhood cancer treatments are most likely to affect fertility?
Certain types of chemotherapy — particularly alkylating agents — can damage the cells responsible for producing eggs and sperm. Radiation directed at or near the pelvis, lower spine, or brain's hormonal centre (hypothalamus and pituitary gland) can also affect fertility. Surgical removal of reproductive organs is a risk only when the tumour is located in or very close to those organs. Not all chemotherapy or radiation carries the same level of risk — your oncologist can explain where your child's treatment falls on the risk spectrum.
What is fertility preservation, and is it possible before treatment starts?
Fertility preservation means taking steps before treatment begins to protect the ability to have children later. For adolescent boys, sperm banking is a well-established option. For adolescent girls, egg or embryo freezing may be considered if there is time before treatment. Younger children have fewer established options, though ovarian tissue freezing is being used in some specialist centres. Whether preservation is feasible depends on the urgency of starting treatment, the child's age, and the treating team's assessment. Discussing this with your oncology team before treatment begins is always worthwhile.
My child finished treatment. How do we find out if fertility has been affected?
After treatment ends, long-term follow-up care includes monitoring hormonal health. Blood tests that measure hormone levels — including FSH, LH, and oestrogen or testosterone — can indicate how well the reproductive system is functioning. For boys, a semen analysis in adulthood gives direct information. For girls, tracking menstrual cycle regularity as they enter puberty is an important early signal. If concerns arise, a specialist in reproductive medicine who works with cancer survivors can carry out a fuller assessment and discuss available options.
Is infertility after childhood chemotherapy always permanent?
Not always. Fertility after chemo in a child depends heavily on the specific drugs used and the total doses received. Some survivors experience a temporary reduction in fertility that improves over months or years as the body recovers. Others may have lasting changes. Because this varies so much from person to person, it is important not to assume either outcome — a proper medical evaluation at the appropriate age is the only reliable way to understand an individual's situation.
Are babies born to childhood cancer survivors at higher risk of cancer or birth defects?
Research to date is generally reassuring on this point. Studies have not found that children born to cancer survivors have a significantly higher rate of birth defects or childhood cancers compared to the general population, except in cases where the original cancer was caused by a hereditary genetic change that can be passed on. If your child's cancer was linked to a known inherited gene change, genetic counselling before the survivor tries to conceive is advisable. Your oncology team can help clarify whether this applies to your family.
This page is for general information only and does not replace a consultation with your child's oncology or reproductive medicine team. Every survivor's situation is individual.
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