07/31/2026
Every word of this! 🎗️
Childhood Cancer Is Not Adult Cancer in a Smaller Body
One of the biggest misconceptions is that cancer is cancer.
It’s not.
Saying childhood cancer is the same as adult cancer is like saying a bicycle and an airplane are the same because they both have wheels. They may share a few similarities, but they are built completely differently, function differently, and require completely different approaches.
The same is true for cancer.
The word “cancer” is really an umbrella term for more than 200 different diseases. The cancer that develops in a 65-year-old adult is often nothing like the cancer found in a 6-year-old child.
Adult cancer is usually a disease of aging.
Every day our cells divide. Every time they divide, they copy their DNA. Over decades, tiny mistakes begin to build up.
Think of making a photocopy. The first copy looks perfect. After hundreds or thousands of copies, small imperfections appear. Eventually, enough mistakes accumulate that the system breaks down.
That’s what happens in many adult cancers.
For 50, 60, or 70 years, cells are exposed to sunlight, pollution, cigarette smoke, alcohol, chronic inflammation, infections, hormones, and simply the wear and tear of getting older.
Eventually enough DNA damage accumulates that one cell stops following the rules.
That cell keeps dividing.
It ignores signals to stop growing.
It refuses to die when healthy cells would.
It becomes cancer.
That’s why adult cancers are commonly found in organs that have spent decades being exposed to life—lungs, colon, breast, prostate, pancreas, bladder, skin.
Childhood cancer is different from the very beginning.
Children haven’t lived long enough for decades of damage to occur.
Most have never smoked.
Most have never consumed alcohol.
Many haven’t even reached puberty.
Their cancers aren’t caused by years of poor lifestyle choices or environmental exposure.
Instead…
Imagine building a brand-new house.
Thousands of workers are framing walls, installing electrical wiring, plumbing, windows, roofing, flooring—all at the exact same time.
Now imagine one worker receives the wrong blueprint.
That mistake happens on Day 2 of construction.
Every room built after that mistake carries the same error.
That’s much closer to how many childhood cancers develop.
Children’s bodies are growing faster than they ever will again.
Bones are lengthening.
Muscles are developing.
Blood cells are constantly being produced.
Brain cells are forming new connections.
Every organ is maturing.
Cells are dividing at an incredible pace.
Most of the time, this process is flawless.
But occasionally one developing cell receives the wrong instructions.
Instead of becoming healthy bone…
it becomes osteosarcoma.
Instead of becoming healthy muscle…
it becomes rhabdomyosarcoma.
Instead of becoming normal white blood cells…
it becomes leukemia.
The mistake isn’t because the child did something wrong.
It isn’t because the parent failed.
It’s because biology isn’t perfect.
That’s why pediatric cancers are completely different diseases.
Adults commonly develop:
• Breast cancer
• Lung cancer
• Colon cancer
• Prostate cancer
• Pancreatic cancer
Children more commonly develop:
• Leukemia
• Brain tumors
• Neuroblastoma
• Wilms tumor
• Osteosarcoma
• Ewing sarcoma
• Rhabdomyosarcoma
These cancers don’t just happen in different people.
They come from different cells.
They have different genetic changes.
They behave differently.
They spread differently.
And they respond differently to treatment.
That means treatment has to be different too.
Imagine trying to fix an iPhone using the repair manual for a microwave.
Both are machines.
Both use electricity.
But the tools and instructions are completely different.
That’s how medicine has to approach pediatric cancer.
Doctors can’t simply shrink adult treatments down for children.
A growing child’s body processes medications differently.
Children heal differently.
Their immune systems behave differently.
Their organs are still developing.
Even the way tumors respond to chemotherapy can be completely different.
Children also have something adults don’t…
Time.
A 60-year-old and a 6-year-old might both receive chemotherapy.
But the doctor isn’t only thinking about getting them through treatment today.
They’re thinking about what that chemotherapy might do 50 years from now.
Will it damage their heart?
Will it stop their bones from growing normally?
Will they lose their hearing?
Will it affect learning and memory?
Will they be able to have children someday?
Could it cause another cancer 20 years later?
A child cured of cancer still has an entire lifetime ahead of them.
That’s why pediatric oncologists aren’t just trying to save a life.
They’re trying to save a future.
The heartbreaking part…
Many of the chemotherapy drugs used to treat children today are the same drugs developed decades ago.
For some childhood cancers, we’ve made incredible progress.
For others—especially aggressive cancers like metastatic osteosarcoma—the standard treatments have changed very little in over 40 years.
Think about that.
Our phones have gone from flip phones to smartphones.
Cars can drive themselves.
Medicine has transformed in countless ways.
But for some childhood cancers, families are still being offered many of the same treatments their grandparents would have recognized.
Why?
Because childhood cancer is rare.
Only a small number of children are diagnosed each year compared to adults.
That means fewer clinical trials.
Less pharmaceutical investment.
Less research funding.
Fewer new drugs developed specifically for kids.
It’s not because these children matter less.
It’s because rare diseases are harder to study and often receive fewer resources.
But every child deserves better.
Every child deserves treatments created specifically for childhood cancers.
Every family deserves more than “We’ve tried everything.”
Every parent deserves to hear about new options—not the same options that have existed for generations.
Children deserve research.
Children deserve innovation.
Children deserve urgency.
Because when a child dies from cancer…
we don’t just lose a life.
We lose birthdays that were never celebrated.
Careers that were never started.
Families that were never created.
Grandchildren who will never exist.
Entire futures disappear.
That’s why pediatric cancer research matters.
Not because children are small adults.
But because they aren’t.
And they deserve medicine built for their cancers, their bodies, and their futures.
For Jayden, ryder, Zach, will, Carter, aiofa
For every child still fighting.
For every family praying that the next breakthrough comes in time.
Credit to Cassie Zurlinden.
