What testicular cancer feels and looks like
The most common sign of testicular cancer is a lump or swelling in one testicle, usually painless. You might notice it by accident during a shower or while changing clothes. Some men describe it as a hardness, a change in texture, or a heaviness in the scrotum (the pouch of skin that holds the testicles). The lump is often pea-sized at first, though it can be larger.
Not all lumps are cancer — many are benign (harmless) cysts or other non-cancerous growths. But any new lump, swelling, or change in how a testicle feels warrants a conversation with your doctor. The earlier testicular cancer is caught, the more treatment options are usually available and the better the outlook tends to be.
Some men also notice pain or a dull ache in the lower belly, groin, or testicle itself. A few experience sudden fluid buildup in the scrotum or notice one testicle is noticeably larger than the other. Breast tenderness or enlargement can occur with certain types of testicular cancer because of hormones the cancer cells produce.
Key Takeaways
- A painless lump or swelling in one testicle is the most common sign of testicular cancer and should be checked by a doctor.
- Other signs include pain or heaviness in the scrotum, fluid buildup, or a change in how the testicle feels to the touch.
- A doctor can usually tell the difference between a harmless lump and cancer using an ultrasound, a quick imaging test with no radiation.
- Testicular cancer is most common in men aged 15 to 35, but it can occur at any age.
- Finding it early makes a significant difference in treatment options and outcomes.
How doctors check for testicular cancer
Your first step is a visit to your primary care doctor or a urologist (a doctor who specializes in the urinary and reproductive systems). The doctor will ask when you first noticed the lump and whether you have had any pain, and will examine both testicles by hand to feel for lumps, swelling, or other changes.
If the doctor finds something concerning, the next step is almost always an ultrasound of the scrotum. This is a painless imaging test that uses sound waves to create a picture of the inside of the testicles. It takes about 10 to 15 minutes and requires no radiation or needles. The ultrasound can usually tell whether a lump is solid (which raises concern for cancer) or fluid-filled (which is usually harmless).
If the ultrasound suggests cancer is possible, your doctor will refer you to a urologist who specializes in cancer. That doctor may order blood tests to check for tumor markers — substances that certain cancers produce and that show up in the bloodstream. These tests help confirm a diagnosis and guide treatment decisions.
When to see a doctor about a testicular lump
See a doctor as soon as you notice a new lump, swelling, or change in how a testicle feels. You do not need to wait to see if it goes away on its own. Even if you are not certain whether what you are feeling is abnormal, a doctor can reassure you or catch a problem early.
Some men delay because they feel embarrassed or worry that the lump might be cancer. It is worth knowing that many testicular lumps are not cancer, and that catching cancer early makes treatment more straightforward. A 10-minute exam can answer the question.
If you have pain in the scrotum that comes on suddenly, see a doctor right away or go to an urgent care clinic. Sudden pain can signal a twisted testicle (a condition called testicular torsion) or an infection, both of which need prompt treatment.
Risk factors and who gets testicular cancer
Testicular cancer is most common in men aged 15 to 35, but it can occur at any age. A few factors make it more likely: a personal or family history of testicular cancer, a testicle that did not descend into the scrotum before birth (called undescended testicle or cryptorchidism), or certain genetic conditions.
Having a risk factor does not mean you will develop cancer. Many men with risk factors never do. The most important thing is to be aware of how your testicles normally look and feel, so you notice any change.
What happens after a cancer diagnosis
If a biopsy or imaging confirms testicular cancer, your doctor will order additional tests to learn whether the cancer has spread. These may include a CT scan of the abdomen and chest, and blood tests for tumor markers. This process is called staging, and it tells your doctor how far the cancer has progressed.
Treatment depends on the type of cancer, the stage, and your overall health. Options include surgery to remove the affected testicle, radiation therapy, chemotherapy, or a combination of these. Your urologist or an oncologist (a cancer specialist) will discuss which approach makes sense for your situation.
Testicular cancer has one of the highest cure rates of any cancer, especially when caught early. Many men go on to live normal, healthy lives after treatment.
Self-examination: how to check your own testicles
Knowing how your testicles normally feel makes it easier to spot changes. A good time to check is after a warm shower, when the skin of the scrotum is relaxed. Hold the scrotum gently in your palm and roll each testicle between your thumb and fingers, feeling the entire surface.
You are looking for anything new: a lump, a hard spot, a change in size or shape, or a difference between the two testicles. It is normal for one testicle to be slightly larger than the other, and for the epididymis (a tube at the back of the testicle that stores sperm) to feel like a small bump. If you are unsure whether something is normal, ask your doctor to show you what to feel for during an exam.
Many doctors recommend checking once a month, though the most important thing is simply being aware of your body. If you notice something new or different, that is reason enough to call your doctor.
Frequently Asked Questions
Can testicular cancer be painless?
Yes. Most testicular cancers do not cause pain — the first sign is usually a painless lump or swelling. Pain can occur, but its absence does not mean a lump is harmless. Any new lump should be checked by a doctor regardless of whether it hurts.
Does a lump always mean cancer?
No. Many testicular lumps are benign cysts, fluid collections, or other harmless growths. An ultrasound can usually tell the difference. That is why seeing a doctor is important — not to confirm your fears, but to find out what the lump actually is.
How long does it take to get a diagnosis?
An ultrasound can often be done within a few days of your doctor's visit. If cancer is suspected, additional imaging and blood tests may take another week or two. A biopsy is rarely needed because ultrasound and blood tests usually provide enough information to diagnose testicular cancer.
What if I find a lump but I am scared to see a doctor?
It is normal to feel anxious, but waiting usually makes things worse, not better. A lump does not go away on its own, and the longer you wait, the more you worry. A 10-minute exam gives you an answer and either peace of mind or a clear path forward with treatment.
Can testicular cancer run in families?
Yes, though it is not common. If a close relative (father, brother, or son) has had testicular cancer, your risk is higher than average. Talk to your doctor about whether you should have more frequent check-ups or self-exams.