A testicular self-exam takes about one minute and is easiest to do during or right after a warm shower. The goal is simple: feel each testicle for lumps, swelling, or changes in size that weren’t there before. Testicular cancer is most common around age 33, and it often shows up as a painless lump, so getting familiar with what’s normal for you is the best way to catch something early.
Why a Warm Shower Matters
Heat relaxes the scrotum. When you’re cold, the muscles around your testicles tighten and pull them closer to your body, making them harder to examine. Warm water from a shower or bath loosens that skin and lets the testicles hang naturally, so you can feel the entire surface without resistance.
How to Do the Exam
Check one testicle at a time. Hold it between the thumbs and fingers of both hands, then slowly roll it between your fingertips. You’re covering the entire surface, front and back, feeling for anything hard, round, or raised that doesn’t belong. Apply gentle, steady pressure. This shouldn’t hurt.
It’s normal for one testicle to be slightly larger than the other or to hang a bit lower. What you’re looking for is a change from what you felt last time, not perfect symmetry.
Structures That Are Supposed to Be There
Along the back and top of each testicle, you’ll feel a soft, rope-like structure. This is the epididymis, the coiled tube that stores and transports sperm. It can feel bumpy or cord-like, and that’s completely normal. A thin cord (the spermatic cord) runs upward from it toward the groin. If you’ve never done a self-exam before, spend a moment getting to know these landmarks so you don’t mistake them for something abnormal next time.
What Normal Feels Like
A healthy testicle feels smooth, oval, and firm but not hard. Think of the firmness of a peeled hard-boiled egg. The surface should be even, without any lumps or bumps on the testicle itself. You might notice slight tenderness when you press, which is normal.
Do this once a month, ideally around the same time. The point isn’t to diagnose anything yourself. It’s to build a mental baseline so that if something changes, you notice it quickly.
What Counts as Abnormal
The classic warning sign of testicular cancer is a painless lump or area of hardness on the testicle itself. It might feel like a small pea-sized bump or a larger area of firmness that doesn’t match the other side. The key word is painless: most testicular cancers don’t hurt, at least not at first.
Other changes worth paying attention to:
- Swelling or heaviness. One testicle suddenly feels noticeably heavier or looks bigger than before.
- A dull ache. Persistent discomfort in the lower abdomen, groin, or scrotum that doesn’t go away after a few days.
- Fluid buildup. A sudden increase in fluid around the testicle, making the scrotum feel puffy or swollen.
- Change in firmness. A testicle that feels harder or different in texture compared to your last check.
Not every lump is cancer. A spermatocele, for example, is a painless fluid-filled cyst that forms near the top of the testicle and is completely benign. A hydrocele is a buildup of fluid around the testicle that causes painless swelling. Both are common and harmless, but you can’t tell the difference at home, so any new lump or change is worth getting checked.
One Thing That Needs Immediate Attention
Sudden, severe pain in a testicle is a different situation entirely. Testicular torsion happens when a testicle twists on its cord and cuts off its own blood supply. This is a medical emergency that requires treatment within hours to save the testicle. If you experience sharp, sudden testicular pain, especially with swelling, don’t wait to see if it passes.
What Happens If You Find Something
If you notice a lump, swelling, or any persistent change, the first step is a scrotal ultrasound. It’s a painless test where a provider moves a small probe over the scrotum to create images of what’s inside. The ultrasound can show whether a lump is solid or fluid-filled, and whether it’s inside the testicle or outside it. Lumps inside the testicle are more likely to be cancer; lumps outside it are more often benign.
A blood test may also be ordered to look for specific proteins that testicular cancer cells produce. These tumor markers help clarify the picture, especially if the ultrasound is ambiguous. Between the ultrasound and blood work, most lumps can be identified or ruled out fairly quickly.
Who Should Be Most Aware
Testicular cancer is largely a disease of younger men. The average age at diagnosis is about 33, with most cases occurring between the late teens and mid-forties. About 6% of cases occur in children and teens, and roughly 8% in men over 55, but the core risk window is young adulthood.
The survival rate for testicular cancer caught early is extremely high, which makes self-exams a low-effort habit with real value. There’s no formal screening recommendation from major health organizations, and no standard test that doctors perform routinely. That puts the responsibility squarely on you. A monthly check in the shower is the simplest way to stay on top of it.