Who is at risk
- Age — over half of cases occur between 20 and 34. This is a young man's cancer.
- Undescended testicle (cryptorchidism), even if corrected in childhood — the strongest single risk factor.
- Family history — a father or brother with testicular cancer raises risk several-fold.
- Personal history — having had cancer in one testicle raises the risk in the other.
- Abnormal testicular development, including some intersex conditions and infertility.
- Race — more common in white men, though it occurs in men of every background.
- Important: injury, sport, cycling, vasectomy and masturbation do not cause testicular cancer. An injury sometimes draws attention to a lump that was already there.
Finding it early
You find it yourself. There is no blood test or scan used for screening, and major bodies do not recommend routine screening in men without symptoms — largely because outcomes are already excellent. What matters is noticing a change and acting on it.
How to check: once a month, after a warm shower when the skin is relaxed. Roll each testicle gently between thumb and fingers. You are feeling for a firm, usually painless lump on the surface, a change in size or firmness, or a heavy, dragging ache. The soft tube behind each testicle (the epididymis) is normal — get to know it so you are not alarmed by it.
Also report: a dull ache in the groin or lower abdomen, sudden fluid collection, or breast tenderness or enlargement — some testicular tumors produce hormones.
Most lumps are not cancer. But a firm lump in the testicle should be examined within days, not months. The average delay between noticing and seeking help is measured in months, and that delay is the main thing that turns an easily cured cancer into a harder one.
How it’s diagnosed
Ultrasound of the scrotum is quick, painless and highly accurate at distinguishing a solid tumor from a cyst or fluid.
Blood tumor markers — AFP, beta-hCG and LDH — are measured before treatment. Testicular cancer is one of the few cancers where blood markers are genuinely central: they help classify the tumor, guide treatment and track response afterwards.
Diagnosis is made by removing the testicle (radical inguinal orchiectomy) through an incision in the groin, not the scrotum. Needle biopsy through the scrotum is avoided because it can spread cells along a different drainage path. This operation is both the diagnosis and the first treatment.
Before treatment starts, ask about sperm banking. It should be offered to every man, and it is far easier to arrange before surgery or chemotherapy than after. This is the single most commonly missed conversation in testicular cancer care.
Staging explained simply
Stage uses T, N and M like other cancers, but adds a fourth letter unique to this disease: S, for how high the blood tumor markers are after surgery. Marker levels genuinely change the risk group and the treatment.
| Stage | What it means in plain words |
|---|---|
| Stage 0 | Abnormal cells confined to the seminal tubules (germ cell neoplasia in situ). Not yet invasive. |
| Stage I | Confined to the testicle. Cure rates approach 100% — often with no treatment after surgery beyond monitoring. |
| Stage II | Spread to lymph nodes at the back of the abdomen. Still highly curable. |
| Stage III | Spread to distant lymph nodes or organs, most often the lungs. Even here, cure is the expected goal. |
Grading and biology
Testicular cancer is not graded 1–3. The critical division is seminoma versus non-seminoma, and it changes everything.
Seminomas grow more slowly, tend to occur slightly later, and are exquisitely sensitive to both radiation and chemotherapy. Non-seminomas (embryonal carcinoma, yolk sac tumor, choriocarcinoma, teratoma, or mixtures) occur younger, can grow faster, and are treated with chemotherapy and surgery rather than radiation. A raised AFP means the tumor is treated as a non-seminoma regardless of what the microscope showed.
Two other features guide stage I management: lymphovascular invasion, and — in seminoma — tumor size.
How it’s treated
Removing the affected testicle is the first treatment for nearly everyone. A prosthesis can be placed at the same time or later if you want one.
For stage I, surveillance is often the best choice. Rather than give treatment everyone might not need, many men are monitored with scheduled scans and markers, with treatment reserved for the minority who relapse — and cure rates remain near 100%. This spares most men chemotherapy or radiation entirely.
Chemotherapy is remarkably effective here. Platinum-based regimens cure the majority even with widespread disease — testicular cancer is the disease that proved metastatic cancer could be cured.
Radiation has a specific and shrinking role: seminoma is highly radiosensitive, and radiation to the lymph nodes at the back of the abdomen was long standard for stage I and IIA seminoma. It is used more selectively now, because surveillance and single-agent chemotherapy achieve the same cure with less long-term risk in many men. When radiation is right, it works extremely well.
Surgery to remove residual lymph nodes (RPLND) is used in non-seminoma when masses remain after chemotherapy.
Where CureRays fits: we are radiation specialists, and we will tell you honestly that in stage I seminoma the trend has moved away from radiation. Our job is to help you weigh it, not to sell it.
What the guidelines say
In broad strokes: remove the testicle through the groin; measure markers before and after; sperm bank before treatment; for stage I offer surveillance as a preferred option in both seminoma and non-seminoma; treat higher stages with platinum-based chemotherapy guided by risk classification; use radiation selectively in seminoma; and operate on residual masses in non-seminoma.
Your team will follow national guidelines such as those from the National Comprehensive Cancer Network (NCCN). The above is a plain-language overview of the general approach, not the guideline itself. NCCN publishes free NCCN Guidelines for Patients®.
Outcomes and odds of cure
Testicular cancer has the best outcomes of any solid cancer. Five-year relative survival is approximately 97% across all stages combined (NCI SEER, SEER 21 excluding IL, 2015–2021). In 2025 an estimated 9,720 men will be diagnosed and about 600 will die of it.
Unlike most cancers, SEER does not publish a localized/regional/distant survival breakdown for testicular cancer on its Stat Facts page, so we are not going to invent one. Survival is high at every stage, and your team can give you figures matched to your stage, subtype and risk group — which for this cancer is far more meaningful than a population average.
One honest note: testicular cancer death rates have been rising about 2.7% a year (SEER, 2014–2023) from a very low base. The absolute numbers remain small, but it is a reminder that "highly curable" is not the same as "ignorable."
These are population statistics from the National Cancer Institute's SEER program. They describe large groups of people, not any one person, and cannot predict what will happen to you.
Side effects and how we watch for them
Because most men are cured and young, long-term effects matter more here than in almost any other cancer. Treatment decisions are made with the next fifty years in view, not just the next five.
Chemotherapy: hearing loss and ringing in the ears, tingling in hands and feet, kidney effects, and a raised long-term risk of cardiovascular disease and metabolic syndrome. Report hearing changes early — doses can be adjusted.
Radiation: nausea and fatigue during treatment; the long-term concern is a small increased risk of second cancers in the treated field decades later, which is precisely why its role has narrowed.
Surgery: RPLND can affect the nerves controlling ejaculation; nerve-sparing technique reduces this. Ask specifically about it.
Fertility and hormones: most men father children after treatment, but sperm banking beforehand is still the right move. Testosterone should be checked afterwards — low testosterone is common, under-diagnosed, and easily treated.
How it is assessed: graded on a standard scale at each visit, with hearing, kidney function and testosterone specifically monitored.
Follow-up, remission and survivorship
Remission means no detectable cancer and normal markers. For men on surveillance, follow-up is the treatment plan — scans and markers on a strict schedule, most intensive in the first two years, when almost all relapses occur. Relapse found on surveillance is still curable, which is exactly why the schedule is not optional.
Long-term survivorship should include blood pressure, cholesterol and testosterone checks, attention to cardiovascular risk, hearing assessment if you had cisplatin, and examination of the remaining testicle — a second primary is uncommon but real.
Say something if mood, energy, libido or fertility are affected. These are common after treatment, rarely volunteered, and usually treatable.
Questions people actually ask
I found a lump but it doesn't hurt. Is that reassuring?
No — the opposite. Testicular cancer lumps are usually painless. Pain is more often infection or inflammation. A firm, painless lump is the classic presentation and should be examined within days.
Will I still be able to have children?
Most men do. One healthy testicle usually maintains fertility and testosterone. Chemotherapy can affect sperm counts temporarily or permanently, which is why sperm banking before treatment should be offered to everyone — ask if it has not been.
Will losing a testicle change how I look or feel?
A prosthesis can be placed if you want one, at surgery or later. Hormone production usually continues normally from the other side, though testosterone is worth checking afterwards.
Why would they watch instead of treat?
Because most stage I cancers are already cured by the surgery. Surveillance spares the majority unnecessary chemotherapy or radiation while keeping cure rates near 100% for the minority who relapse. It requires sticking to the scan schedule.
I'm 24 and too embarrassed to get this checked.
This is the most common reason for delay, and the delay is the only part of this disease that reliably makes it worse. The examination takes two minutes, the ultrasound is painless, and this is a cancer that is almost always cured when acted upon.
Informational only, not medical advice — confirm with your care team.
Go deeper on testicular cancer
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