Diagnosis, Screening, and Early Detection of Testicular Cancer

• Most testicular cancer is first noticed by the man himself, often as a painless lump or change in a testicle, rather than through a formal screening program.
• No formally recommended, population-wide test exists to screen for testicular cancer, and the available evidence hasn’t shown that checking on your own or during a doctor visit reduces deaths from the disease.
• Diagnosis combines a physical exam with scrotal ultrasound and tumor-marker blood work.
• When imaging and tumor markers point to testicular cancer, doctors typically skip a biopsy of the mass itself and go straight to surgical removal of the testicle (radical inguinal orchiectomy), both to confirm the diagnosis and to avoid spreading cancer cells.
• Finding testicular cancer at an earlier stage can mean less intensive chemotherapy and surgery, and this cancer generally responds well to treatment overall.

Recognizing Potential Signs of Testicular Cancer

Being aware of possible signs of testicular cancer is often what leads to a diagnosis in the first place, since there is no formal screening program for this condition. The sections below cover what a doctor looks for once a change has been noticed and how a diagnosis is confirmed; a full list of possible signs and symptoms is covered on this site’s testicular cancer symptoms page.

Common Symptoms and Physical Changes

The most common sign is a painless lump or swelling in one testicle, sometimes along with a sense of fullness or drag in the scrotal area, a dull ache lower in the abdomen or groin, or a change in how a testicle feels. These changes are usually gradual, which is one reason becoming familiar with your own body helps you notice something new.

When to Consult a Doctor

Any new lump, swelling, or persistent discomfort in a testicle is worth having evaluated, even though most such changes turn out to be caused by conditions other than cancer, such as a cyst or infection. A doctor can examine the area, order the right tests, and either rule out cancer or start the diagnostic process described below.

Proactive Screening: Testicular Self-Exams

Unlike some other cancers, there isn’t an organized, population-wide program doctors use to check every man for testicular cancer before symptoms appear. The National Cancer Institute points out that no research has demonstrated a mortality benefit from testicular self-checks or from a doctor examining men who feel well, and that adding routine screening on top of usual care probably wouldn’t change how many men die of the disease — largely because testicular cancer tends to respond well to treatment even when it’s caught later. In practice, though, most testicular cancer is still first found by the man himself, either by chance or while checking, which is why many people choose to become familiar with how their testicles normally feel.

Step-by-Step Guide to Self-Examination

There is no official schedule for testicular self-exams, but checking periodically — for example, during or after a warm shower, when the scrotal skin is relaxed — can make it easier to notice a change over time. A simple technique looks like this:

1. Stand in front of a mirror and look for any swelling of the scrotal skin.
2. Examine each testicle separately with both hands, placing the index and middle fingers underneath and the thumbs on top.
3. Gently roll the testicle between the thumbs and fingers; feeling a soft, tube-like structure at the back (the epididymis, which stores and carries sperm) is normal.
4. Feel for any lumps, or changes in size, shape, consistency, or tenderness compared with what feels normal for you.

It is common for one testicle to be slightly larger or to hang lower than the other, so the goal is to notice a change from your own baseline rather than compare one side exactly to the other.

What to Look and Feel For

When checking, the changes worth paying attention to include:

• A firm, usually painless lump on the front or side of a testicle.
• An increase in the size of a testicle, or a change in its consistency, such as becoming harder.
• A feeling of heaviness or dull ache in the scrotum or lower abdomen.
• Any new or persistent pain or tenderness.

Most lumps found this way are not cancer, but only a doctor can make that determination, so it is worth having any new or unusual finding checked rather than waiting to see if it changes.

Clinical Testicular Cancer Diagnosis Methods

Once a possible sign has been noticed, whether through self-checking or a routine visit, a doctor uses a combination of physical examination, imaging, and blood tests to confirm or rule out testicular cancer.

Initial Doctor’s Examination and History

The process usually starts with a physical exam, during which the doctor feels the testicles, scrotum, and abdomen for lumps, swelling, or tenderness. A doctor may also hold a light against the scrotum (transillumination) to see whether it passes through the area, which can help tell a solid mass apart from a fluid-filled cyst. The doctor will also ask about symptoms, their duration, and risk factors such as an undescended testicle at birth or a family history of testicular cancer, which help guide what testing comes next.

Imaging and Lab Tests for Confirmation

If the exam or history raises concern, further testing is used to confirm the diagnosis and guide treatment planning:

• Scrotal ultrasound: the primary imaging test for a suspected testicular mass. This painless procedure uses sound waves to help distinguish a solid mass, which is more likely to be cancerous, from a fluid-filled cyst or other benign finding.
• Blood tests for tumor markers: alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), and lactate dehydrogenase (LDH) can be elevated in testicular cancer. These markers are measured before treatment and tracked afterward, since falling or rising levels help show how well treatment is working.
• Diagnosis by orchiectomy rather than biopsy: unlike many other cancers, a testicular mass usually is not biopsied through the scrotum before treatment, because a scrotal biopsy carries a real risk of spreading cancer cells locally. Instead, when imaging and tumor markers point to cancer, the standard approach is to surgically remove the entire testicle through an incision in the groin (radical inguinal orchiectomy), which both treats the tumor and lets a pathologist confirm the diagnosis.
• CT scans: if cancer is confirmed, CT scans of the abdomen, pelvis, and chest are commonly used to check whether it has spread beyond the testicle.

The Importance of Early Detection and Treatment

Even though testicular cancer does not have a standard screening test, finding and diagnosing it earlier still matters for how treatment is planned. When the cancer is confined to the testicle at diagnosis, it can often be managed with less intensive chemotherapy and surgery than cancer that is found after it has spread, which can mean fewer side effects overall.

Impact on Prognosis and Survival Rates

Testicular cancer generally responds well to treatment, which is one reason routine population-wide screening has not been shown to change outcomes — even cancer found at a later stage is usually treatable. The specific outlook depends on factors such as the tumor type and how far the cancer has spread at diagnosis; detailed five-year survival statistics by stage are covered on this site’s dedicated testicular cancer survival rate page rather than repeated here.

Frequently Asked Questions

How often should a testicular self-exam be performed?

There isn’t an established interval, since research hasn’t found that checking on a set schedule changes how many men die of testicular cancer. Many people still find it useful to check every so often so they know how their testicles normally feel, making any new change easier to notice; how often to do that is a personal choice rather than a fixed requirement.

What should I do if I find a lump during a self-exam?

Contact a doctor if you notice a lump, swelling, or other change, even though most lumps turn out not to be cancer. Only a clinical exam and the appropriate tests can confirm the cause, and prompt evaluation means treatment can start sooner if it is needed.

Is testicular cancer common, and who is most at risk?

Testicular cancer is rare overall — it’s a small share of cancer cases in men — but it’s diagnosed more often in men in their 20s and early 30s than any other cancer type, with a typical age range of 20 to 34. Risk factors include a history of an undescended testicle, a family history of testicular cancer, or a previous diagnosis of testicular cancer in the other testicle.

Sources

• National Cancer Institute – Testicular Cancer Screening (PDQ®)–Patient Version, 2025
• National Cancer Institute – Testicular Cancer Treatment (PDQ®)–Patient Version, 2023
• National Cancer Institute – Testicular Cancer Treatment (PDQ®)–Health Professional Version, 2025
• MedlinePlus – Testicular Cancer, 2026