Not every lump is cancer - but every new lump deserves the right assessment
Testicular pain, a new lump, or scrotal swelling should never be ignored. Most causes are not cancer, but some problems—especially testicular torsion (twisting of the testicle)—need urgent care to save the testicle. Painful swelling can be a sign of cancer in some cases.
Testicular Pain (What it can mean)
Testicular pain can start suddenly or slowly. Common causes include:
- Testicular torsion (emergency): sudden severe pain (often with swelling and sometimes nausea/vomiting). Blood flow can be cut off.
- Epididymitis / epididymo-orchitis (infection/inflammation): usually one-sided pain and tenderness, swelling, and sometimes a hydrocele (fluid around the testicle). It can be related to a sexually transmitted infection (STI) or a urinary infection.
- Trauma (injury) or a pulled muscle.
- Hernia: bowel slips into the groin/scrotum.
- Tumour/cancer: often painless, but pain can occur.
Testicular Lumps
A “lump” can come from the testicle itself or from nearby structures.
Important: A solid lump in the testicle should be treated as possible cancer until proven otherwise and checked promptly with an ultrasound.
Lumps can also be from benign (non-cancer) causes like cysts or swelling in tubes around the testicle; ultrasound is often used to tell the difference.
Scrotal Swelling
Scrotal swelling can be from:
- Hydrocele (fluid around the testicle)
- Infection/inflammation (like epididymitis)
- Hernia
- Varicocele (enlarged veins—often feels like a “bag of worms”)
- Tumour
Swelling is one of the key symptoms that doctors take seriously when deciding on imaging and referral.
Hydrocele (Fluid around the testicle)
A hydrocele is a collection of fluid around the testicle that can cause a soft, sometimes heavy-feeling scrotal swelling. Hydroceles are usually benign, but an ultrasound may be needed to confirm it’s a hydrocele and to make sure there isn’t another cause (like a tumour or hernia).
When to Seek Urgent Assessment:
- Sudden, severe testicular pain, especially with swelling
- Pain with nausea/vomiting
- A testicle that looks higher than usual or sits differently than normal
- Severe pain where the cause is unclear (torsion must be ruled out)
- Fever with severe scrotal pain/swelling, or you feel very unwell
Why urgent? Torsion is a surgical emergency, and delays can permanently damage the testicle.
Investigation (How doctors evaluate it)
1) History and physical exam
Your clinician may ask:
- When it started, how fast it came on, and how bad it is
- STI risk, urinary symptoms, fever
- Recent injury or heavy lifting
- Any new lump or change in size
2) Ultrasound (main test)
- Scrotal ultrasound with Doppler checks for blood flow and helps find causes like torsion, infection, hydrocele, hematoma, or a mass. [5]
- Ultrasound is the test of choice for a new palpable scrotal abnormality.
3) Lab tests (often done)
Depending on symptoms, your clinician may do:
- Urine test for infection/inflammation
- STI tests for chlamydia and gonorrhaea when epididymitis is suspected [1]
- If a testicular tumour is suspected, blood tumour markers may be checked (AFP, β-hCG, LDH) before treatment.
Treatment (Depends on the cause)
If torsion is suspected
- Emergency urology evaluation and usually urgent surgery to untwist and save the testicle.
If epididymitis/epididymo-orchitis is suspected
- Antibiotics are usually started right away for sexually active men before all results are back, because treating early helps prevent complications and spread to partners.
- You may also be advised rest, scrotal support, and anti-inflammatory pain relief (if safe for you).
If a hydrocele is confirmed
- Observation is common if it is small and not bothersome.
- Treatment may be considered if it is large, painful, or interfering with daily life; options can include procedures or surgery depending on the situation (your urologist will discuss what fits you best).
If a solid testicular mass is found
- Managed as possible cancer until proven otherwise, typically with urgent urology follow-up and a planned treatment pathway.
Frequently Asked Questions (FAQs)
1) Can testicular pain be serious even if it improves?
Yes. Some emergencies can have pain that comes and goes. If pain was sudden/severe or the cause is unclear, get urgent care to rule out torsion.
2) If the lump hurts, does that mean it’s not cancer?
No. Painful testicular enlargement can still be cancer, so it still needs evaluation (often ultrasound).
3) What test is most useful for a lump or swelling?
A scrotal ultrasound with Doppler is usually the key test.
4) If I’m treated for epididymitis, do I still need follow-up?
Often, yes—especially if symptoms don’t improve as expected, swelling persists, or a lump is felt. Sometimes additional evaluation is needed to make sure another cause wasn’t missed.
5) Should I do “self-exams”?
Knowing what is normal for your body can help you notice changes earlier. If you find a new lump, hard area, or one-sided enlargement, arrange a medical visit promptly.
This guide is not a substitute for professional medical advice. If symptoms worsen, you develop sudden severe pain, or you have new concerns, contact your doctor or seek emergency care.
