Next review: August 2027, or sooner if testicular-cancer or emergency-care guidance changes
Written and edited by: Adel Galal, Founder and Editor of NextFitLife
Medical review status: This article has been editorially reviewed and source-checked against current cancer and emergency-care guidance. It has not been medically reviewed by a licensed urologist, oncologist, radiologist, pathologist, oncology nurse specialist, or other clinician.
What are the major signs of testicular cancer?
A painless lump, swelling, enlargement, or change in how one testicle feels is a common warning sign. Some people notice heaviness, a dull ache, discomfort, or a new buildup of fluid in the scrotum.
Most testicular lumps and swellings are not cancer, but you cannot reliably tell the cause from appearance, touch, pain level, or online photographs.
A new lump, firm area, enlargement, or persistent change should be examined by a healthcare professional. A scrotal ultrasound is commonly used to determine whether a change is inside or outside the testicle and whether it appears solid or fluid-filled.
Sudden severe testicular pain is an emergency
Go to an emergency department or contact your local emergency service for sudden severe pain in one testicle, especially when it comes with swelling, nausea, vomiting, abdominal pain, or a testicle that appears unusually high or positioned differently.
These symptoms can be caused by testicular torsion, in which the spermatic cord twists and cuts off blood supply to the testicle. Treatment is time critical. Do not wait to see whether severe sudden pain improves on its own.
Severe scrotal pain with fever, major trauma, fainting, or rapidly increasing swelling also needs urgent assessment.
Medical and editorial notice
Adel Galal is a consumer health and wellness writer and editor. He is not a physician, urologist, oncologist, radiologist, pathologist, nurse, or licensed healthcare professional.
This article cannot diagnose a lump, interpret an ultrasound or tumor-marker result, identify testicular torsion, or recommend a personal cancer-treatment plan.
What signs and symptoms can testicular cancer cause?
The National Cancer Institute lists several possible symptoms of testicular cancer:
- a painless lump or swelling in either testicle
- a change in how a testicle feels
- a dull ache in the lower abdomen or groin
- a sudden buildup of fluid in the scrotum
- pain or discomfort in a testicle or the scrotum
Some people notice that one testicle becomes larger, firmer, heavier, or different from its usual shape or texture. One testicle naturally may hang lower or be slightly larger than the other, so the important question is whether there is a new or persistent change from your normal.
Testicular cancer may be painless. The absence of pain does not make a new lump safe to ignore.
A lump does not automatically mean cancer. Several benign and treatable conditions can produce similar findings.
Can actual pictures show whether a testicular lump is cancer?
No. Online pictures cannot diagnose or safely rule out testicular cancer.
A tumor can be inside the testicle without producing a distinctive visible change on the outside of the scrotum. Some lumps are easier to feel than to see.
Photographs can also be misleading because hydroceles, varicoceles, cysts, infection, inflammation, hernias, and injury can all cause swelling or changes in appearance.
Why picture comparison can be harmful
A reader may delay care because a lump does not resemble a cancer image. Another person may mistake normal anatomy or a benign cyst for cancer and become unnecessarily frightened.
The safer approach is simple: if a testicle develops a new lump, firm area, enlargement, or persistent change, arrange a medical examination rather than trying to match it to an image.
Should you routinely screen yourself for testicular cancer?
Routine screening and noticing a symptom are different.
The U.S. Preventive Services Task Force recommends against routine testicular-cancer screening by clinician examination or self-examination in asymptomatic adolescent and adult males at average risk. Its recommendation is based on the low incidence of testicular cancer, the high cure rate, and the lack of evidence that routine screening improves outcomes.
The National Cancer Institute likewise states that there is no standard or routine screening test for testicular cancer.
This does not mean that a new lump or swelling should be ignored. If you notice a change while bathing, dressing, exercising, having sex, or at another time, have it checked.
People with a previous testicular cancer, an undescended testicle, or another known high-risk condition should follow the individualized surveillance advice given by their healthcare team.
What else can cause a testicular lump, swelling, or pain?
| Potential cause | Typical pattern | What to do? |
|---|---|---|
| Epididymal cyst or spermatocele | Often a smooth or cyst-like lump near the epididymis | Have a new lump assessed rather than diagnosing it by touch |
| Hydrocele | Fluid around the testicle causing enlargement or heaviness | Arrange assessment if new, persistent, or enlarging |
| Varicocele | Enlarged scrotal veins, sometimes with aching or heaviness | Discuss persistent pain, swelling, or fertility concerns |
| Epididymitis or orchitis | Pain, tenderness, swelling, urinary symptoms, or fever | Prompt medical assessment may be needed |
| Inguinal hernia | A groin or scrotal bulge that may change with standing or coughing | Urgent care for severe pain, vomiting, or a trapped bulge |
| Testicular torsion | Sudden severe pain, swelling, nausea, vomiting, or a high-riding testicle | Emergency evaluation immediately |
| Testicular cancer | Often a painless lump, swelling, enlargement, firmness, or change in feel | Prompt medical evaluation |
Symptoms overlap. Do not try to determine the cause from whether the lump is hard or soft, how painful it is, or whether it resembles an online photograph.
Who has a higher risk of testicular cancer?
NCI identifies several established risk factors, including:
- an undescended testicle, also called cryptorchidism
- a personal history of testicular cancer
- a family history of testicular cancer
- certain abnormal testicular-development conditions
- germ cell neoplasia in situ
Having a risk factor does not mean cancer is present or certain to develop. Testicular cancer also occurs in people without an obvious risk factor.
If you were born with an undescended testicle or previously had testicular cancer, ask your healthcare professional what follow-up is appropriate for you rather than relying on a general screening schedule.
What happens when you see a doctor about a testicular lump?
The clinician may ask when the change started, whether it is growing, whether there is pain or fever, whether you had an injury, and whether you have a history of an undescended testicle, infertility, or previous testicular cancer.
A physical examination usually includes looking at and gently examining both testicles and the surrounding scrotal structures. Depending on the findings, you may be referred for a scrotal ultrasound or to a urologist.
An urgent referral does not mean cancer has been confirmed. It means the change needs timely evaluation.
How does a scrotal ultrasound help?
Ultrasound uses sound waves to create images of the testicles and surrounding structures. It is commonly used when a lump, swelling, or other abnormality needs evaluation.
Ultrasound can help determine whether a finding is:
- inside or outside the testicle
- solid or fluid-filled
- associated with altered blood flow
- more consistent with a cyst, hydrocele, varicocele, torsion, inflammation, or suspicious testicular mass
An ultrasound result is interpreted together with the examination, symptoms, and other tests. It is much more useful than comparing the scrotum with internet pictures.
What blood tests are used when testicular cancer is suspected?
Doctors may measure serum tumor markers before treatment when testicular cancer is suspected. Important markers include:
- AFP: alpha-fetoprotein
- beta-hCG: beta-human chorionic gonadotropin
- LDH: lactate dehydrogenase
NCI notes that these markers help with diagnosis, staging, prognosis, and follow-up. They are not stand-alone screening tests, and normal marker levels do not rule out every testicular cancer.
Do not try to interpret an AFP, beta-hCG, or LDH value from an online reference range without the clinical context.
How is testicular cancer confirmed?
When examination, ultrasound, and other findings strongly suggest a malignant testicular mass, the usual diagnostic and initial treatment procedure is a radical inguinal orchiectomy. The affected testicle is removed through an incision in the groin, and a pathologist examines the tissue.
NCI notes that a transscrotal needle biopsy is generally avoided when testicular cancer is suspected because cutting through the scrotum can alter lymphatic drainage and increase local recurrence risk.
This does not mean that every testicular lump leads to removal of a testicle. Many lumps are caused by cysts, fluid collections, varicoceles, infection, inflammation, or other noncancer conditions. Ultrasound and specialist assessment help determine the next step.
Should fertility be discussed before treatment?
Yes. Testicular cancer and some treatments can affect sperm production and fertility. If cancer is suspected strongly enough that surgery or other treatment is being planned, ask about fertility preservation before treatment whenever the medical situation allows.
Topics may include semen analysis, sperm banking, effects of chemotherapy or radiation, and future testosterone monitoring.
Many people with one healthy remaining testicle continue to make adequate testosterone and sperm, but individual fertility and hormone function vary.
What should you do if you notice a testicular change?
- Use emergency care for sudden severe pain. Do not wait to see whether it settles.
- Arrange a prompt appointment for a new lump or persistent swelling.
- Do not diagnose it from a picture. Cancer and benign conditions can look or feel similar.
- Note when the change started. Tell the clinician whether it is growing, painful, or associated with fever, urinary symptoms, nausea, or injury.
- Mention relevant history. Include an undescended testicle, previous testicular cancer, family history, or fertility concerns.
Key takeaway
Online pictures cannot diagnose testicular cancer. A new lump, swelling, enlargement, firm area, heaviness, or persistent change deserves medical evaluation even when it is painless.
Sudden severe testicular pain is different: it can indicate testicular torsion and requires emergency care.
For a non-emergency lump or swelling, clinical examination and scrotal ultrasound are usually much more useful than appearance alone. Tumor-marker blood tests and specialist assessment may be added when cancer is suspected.
Authoritative references
- National Cancer Institute: Symptoms of Testicular Cancer
- National Cancer Institute: Testicular Cancer Diagnosis & Prognosis
- National Cancer Institute: Testicular Cancer Causes and Risk Factors
- National Cancer Institute: Testicular Cancer Screening
- USPSTF: Testicular Cancer Screening Recommendation
- NHS Essex: Testicular Torsion Emergency Advice
- MedlinePlus: Testicular Cancer
Source review date: August 7, 2026
These organizations do not endorse NextFitLife.
Editorial policies
Frequently asked questions
What is often the first sign of testicular cancer?
A painless lump, swelling, enlargement, or change in how one testicle feels is a common presentation. Some people have aching, heaviness, or discomfort instead.
Is a testicular cancer lump hard or soft?
A suspicious mass may feel firm, but touch alone cannot diagnose cancer. Benign cysts and other conditions can also create lumps. Examination and ultrasound are more reliable.
Can pictures identify testicular cancer?
No. A tumor can be felt without being visible, and benign conditions can resemble cancer in photographs. Pictures can create false reassurance or unnecessary fear.
When is testicular pain an emergency?
Sudden severe pain, especially with swelling, nausea, vomiting, abdominal pain, or an unusually positioned testicle, requires emergency evaluation because testicular torsion is possible.
What test is commonly used for a testicular lump?
A clinician usually examines the scrotum and may order a scrotal ultrasound. Tumor-marker blood tests may be added when cancer is suspected.
Is routine self-screening recommended for testicular cancer?
The USPSTF recommends against routine self-examination or clinician examination solely to screen asymptomatic average-risk adolescent and adult males. Any new lump or other symptom should still be evaluated promptly.
Do normal tumour markers rule out testicular cancer?
No. AFP, beta-hCG, and LDH can help with diagnosis, staging, and monitoring, but normal marker levels do not rule out every testicular cancer.
Does finding a lump mean the testicle will be removed?
No. Many testicular and scrotal lumps are benign. Removal is considered when the overall evaluation strongly suggests a malignant testicular mass.
Is this article medically reviewed?
No. It has been source-checked against current authoritative guidance but has not been reviewed by a licensed clinician.
Medical disclaimer
NextFitLife provides general educational information and does not diagnose testicular cancer or torsion, interpret personal ultrasound or tumor-marker results, or recommend treatment. Seek emergency care for sudden severe testicular pain. Discuss new lumps, swelling, persistent changes, and treatment or fertility questions with an appropriately qualified healthcare professional.
Health & wellness writer with 30+ years of experience in nutrition, fitness, and healthy aging. Founder of NextFitLife.com — evidence-based health guidance.
