The short answer
Moving to adult care means losing a team that knew you and gaining a system that expects you to manage your own care. A written treatment summary and a plan for insurance make it manageable.
Adult clinics are organized around self-management, so shorter appointments and less explanation are a change in culture, not a drop in quality.
A written treatment summary listing agents, cumulative doses, radiation fields, and surgeries is the most valuable thing to carry forward.
Children's Oncology Group Long-Term Follow-Up Guidelines are risk-based, matching screening to the treatment you actually received.
Passport for Care and COG Health Links turn that treatment history into a personalized plan and plain-language handouts.
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This page is for teens and young adults who were treated for cancer as children and are moving to adult care. It covers what to bring, how follow-up works, insurance at age 26, and taking charge of your own care.
Why this change can feel like a loss
You may have been coming to the same building since you were small. The nurses know how you take bad news. The child life specialist knows what distracts you. Your parents know the parking garage. Then, somewhere between eighteen and twenty-six, the system decides you belong somewhere else.
The grief that comes with this is real, and it is widely reported. Adult clinics are quieter, faster, and built around the assumption that you will manage your own care. Appointments are shorter. Nobody explains things to your mother. It is a change in culture as much as in address.
Planning for it a year or two in advance makes it far less abrupt.
The document that matters most
Before you leave pediatric care, ask for a written treatment summary and survivorship care plan. This is the single most valuable thing you can take with you.
The National Cancer Institute says your treatment team should give you a written summary of the treatment you received. Ask that it records your exact diagnosis and the dates of treatment, every chemotherapy drug you received with doses, any radiation, surgeries, stem cell transplant details, and any significant complications. Adult doctors who did not treat you cannot work this out from a scar or a memory. Which late effects you should be checked for, and how often, depends on the treatments you had, so go through this with your pediatric team before you leave.
Keep a copy yourself, on paper and in a file you can email from your phone. Do not assume records will follow you between health systems.
Risk-based follow-up
The Children's Oncology Group publishes Long-Term Follow-Up Guidelines for survivors of childhood, adolescent, and young adult cancers. They are risk-based. According to the Children's Oncology Group, recommendations vary with the therapies each person received. Alongside them are Health Links, free patient handouts on many health topics.
Passport for Care is a free online tool that creates a personalized treatment summary, possible late effects and a follow-up plan based on the COG guidelines.
Ask your pediatric team which specific late effects apply to you. Ask at what interval each should be checked. And ask what symptoms mean you should contact someone sooner. Write the answers down. Late effects can appear years after treatment ends, which is exactly why follow-up continues long after you feel well.
Insurance and the age-26 cliff
In the United States, HealthCare.gov says you can generally join and stay on a parent's job-based plan until you turn 26, even if you get married, start or leave school, live in or out of your parent's home, or are not claimed as a tax dependent. For a Marketplace plan, you can stay covered through December 31 of the year you turn 26. Check with the employer or plan about exact dates.
HealthCare.gov describes a Special Enrollment Period as a time outside Open Enrollment when you can enroll in or change Marketplace plans. Ask a hospital social worker or HealthCare.gov what you qualify for, and look at your options before your coverage ends so you do not have a gap in care.
Finding the right adult clinician
Ask your pediatric team whether an adult survivorship clinic is available and who they recommend. Bring your treatment summary to the first visit, and be ready to explain it. If your new doctor has not cared for a childhood cancer survivor before, point to the COG guidelines.
Taking over your own care
Practical skills close the gap. Know your diagnosis and your drug names. Book your own appointments. Refill your own prescriptions. Speak first in the room. Practice these while your pediatric team is still there to catch anything you miss. Most people find the confidence comes gradually, one appointment at a time.
Sources

Common questions
What exactly should a treatment summary contain?
The National Cancer Institute says your treatment team should give you a written summary of the treatment you received, and many people keep it in a binder or folder with their medical records. Ask that it include your exact diagnosis, dates of treatment, the chemotherapy drugs and doses, any radiation, surgeries and significant complications. Which late effects to watch for depends on the treatments you had, so ask your team to go through them with you. Keep a copy on paper and in a file you can email.
What are the COG Long-Term Follow-Up Guidelines?
The Children's Oncology Group describes them as an evidence-based framework with risk-based recommendations for screening and follow-up care, tailored to the therapies each person received. Health Links are free patient handouts on many health topics, and Passport for Care is a free online tool that builds a personalized summary and follow-up plan.
What happens to my insurance at 26?
HealthCare.gov says you can generally stay on a parent's job-based plan until you turn 26 even if you marry, start or leave school, live in or out of your parent's home, or are not claimed as a tax dependent. For a Marketplace plan, you can stay covered through December 31 of the year you turn 26. Check with the employer or plan about exact dates, and look at your options before coverage ends.
My new doctor has never treated a childhood cancer survivor. Is that a problem?
It can happen. Bring your treatment summary and point your new doctor to the COG guidelines, which the Children's Oncology Group makes available for providers. Ask your pediatric team whether an adult survivorship clinic is available.
Can I take a break from follow-up if I feel fine?
Don't skip follow-up on your own. The National Cancer Institute says some treatments cause problems that may not show up for months or years after treatment. Ask your care team how often you need to be seen, and which symptoms mean you should call between visits.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
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Written by: Cancer ExplainedSources last checked: 2026-07-30 what this meansLast updated: 2026-10-16Next planned review: 2027-07-30
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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