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 while showering or during self-examination—it feels different from the rest of the testicle, often hard or firm. Some men describe it as a heaviness or ache in the lower abdomen or groin, even without a visible lump.

Other changes to watch for include a testicle that becomes noticeably larger than the other one, a sudden collection of fluid in the scrotum, or tenderness in the breast tissue (which can happen because some testicular cancers produce hormones). Pain in a testicle is less common as an early sign, but it does occur in some cases.

The key point: any change that lasts more than two weeks deserves a doctor's evaluation. Testicular cancer grows quickly, so early detection matters. Most lumps in the testicle are not cancer—cysts, infections, and other benign conditions are far more common—but only a doctor can tell the difference.

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 warning signs include a testicle that feels heavier than usual, sudden fluid buildup, or unexplained breast tenderness.
  • Most testicular lumps are not cancer, but testicular cancer grows quickly, so any change lasting more than two weeks warrants medical evaluation.
  • A physical exam and ultrasound are the standard first steps; blood tests for tumor markers may follow if cancer is suspected.
  • Testicular cancer is most common in men aged 15 to 35, but it can occur at any age.

How to examine your own testicles

Self-examination can help you spot changes early. The best time is after a warm shower or bath, when the scrotal skin is relaxed. Hold the scrotum gently in your palm and roll each testicle between your thumb and fingers, feeling the entire surface. A normal testicle is smooth, oval-shaped, and roughly the size of a grape or small plum—though one is often slightly larger than the other, which is normal.

Feel for the epididymis, a cord-like structure at the back of each testicle. It is normal and should not be confused with a lump. A concerning finding is a hard bump or nodule on the surface or inside the testicle, or a sudden change in size, weight, or texture. If you find something unusual, mark the date and see a doctor within a week or two. Do not panic—most findings are benign—but do not wait to have it checked.

When to see a doctor

Schedule an appointment if you notice a lump, swelling, heaviness, or pain in either testicle that persists for more than two weeks. You should also see a doctor if one testicle becomes significantly larger than the other, if you develop sudden fluid buildup in the scrotum, or if you have unexplained tenderness in your breast tissue.

Your primary care doctor can perform an initial physical exam and order an ultrasound of the scrotum. If the ultrasound raises concern for cancer, you will be referred to a urologist, a surgeon who specializes in the urinary and reproductive systems. The urologist may order blood tests that measure tumor markers—proteins that some cancers produce—to help confirm the diagnosis.

What happens during a doctor's exam

Your doctor will ask about when you first noticed the change, whether you have pain, and whether you have any family history of testicular cancer or other risk factors. They will then examine both testicles by hand, feeling for lumps, swelling, and changes in texture or size. This exam is straightforward and takes just a few minutes.

If your doctor suspects cancer, they will order a scrotal ultrasound, an imaging test that uses sound waves to create detailed pictures of the testicles. Ultrasound is painless and takes 10 to 15 minutes. It can distinguish between solid masses (which are more concerning) and fluid-filled cysts (which are almost always benign). If the ultrasound shows a suspicious mass, blood tests for tumor markers—alpha-fetoprotein (AFP), beta-human chorionic gonadotropin (beta-hCG), and lactate dehydrogenase (LDH)—help guide the next steps.

Risk factors and who is most at risk

Testicular cancer is most common in men aged 15 to 35, though it can occur at any age. Men with a family history of testicular cancer—a father or brother who had it—face higher risk. A personal history of cancer in the other testicle also increases risk.

Men with undescended testicles (a condition called cryptorchidism) have elevated risk, even if the testicle was surgically corrected in childhood. Certain genetic conditions, including Klinefelter syndrome, also raise risk. Race and ethnicity matter: testicular cancer is more common in white men than in Black or Asian men. Having these risk factors does not mean you will develop cancer, but it means you should be more attentive to self-examination and report any changes promptly.

What happens if cancer is suspected

If blood tests and imaging suggest testicular cancer, a urologist will discuss the next step: a surgical procedure called a radical inguinal orchiectomy, in which the entire testicle is removed through an incision in the groin. This is both a diagnostic and therapeutic step—it removes the suspected cancer and allows pathologists to examine the tissue under a microscope to confirm the diagnosis and determine the type and stage of cancer.

This surgery is not the same as a biopsy (a needle sample). Doctors do not biopsy a testicle suspected of cancer because of the risk of spreading cancer cells. Removal is the standard approach. After surgery, imaging tests (CT scan or ultrasound) and additional blood work help determine whether cancer has spread to lymph nodes or other parts of the body. This information guides decisions about further treatment, which may include surveillance, chemotherapy, or radiation depending on the type and stage.

Frequently Asked Questions

Is testicular pain always a sign of cancer?

No. Pain in the testicle is more often caused by infection, injury, or a condition called testicular torsion (a medical emergency in which the testicle twists). However, pain that lasts more than two weeks or comes with a lump or swelling should be evaluated by a doctor to rule out cancer.

Can I have testicular cancer without feeling a lump?

Rarely. A lump or swelling is the most common sign. Some men notice only heaviness, aching in the groin, or breast tenderness. If you have symptoms but cannot feel a lump, an ultrasound can detect masses too small to feel by hand.

What does a testicular cancer lump feel like?

It typically feels hard or firm, unlike the normal spongy texture of testicle tissue. It may be on the surface or deeper inside. Size varies—some are pea-sized, others larger. The key is that it feels different from the rest of the testicle and does not go away within two weeks.

If I have testicular cancer, will I lose the ability to have children?

Removal of one testicle does not prevent fatherhood; the remaining testicle can produce enough sperm. However, some cancer treatments (chemotherapy or radiation) can affect fertility. Discuss fertility concerns with your urologist or oncologist before treatment begins; options like sperm banking may be available.

How common is testicular cancer?

Testicular cancer accounts for about 1 percent of all cancers in men. It is the most common cancer in men aged 15 to 35. When caught early, survival rates are very high—over 95 percent overall, and nearly 100 percent for early-stage disease.