Start with your primary care doctor or general practitioner. They can evaluate a testicle lump during a standard office visit, and if needed, they’ll refer you to a urologist, a specialist who handles conditions of the urinary tract and male reproductive system. You don’t need to go straight to a specialist in most cases, but you should book the appointment soon rather than putting it off.
Your Primary Care Doctor Is the Right First Step
A primary care physician can do a physical exam of your scrotum, order the initial imaging, and determine whether the lump needs further evaluation. Many scrotal lumps turn out to be harmless, and your primary care doctor can often identify common benign causes like fluid-filled cysts or swollen veins without involving a specialist at all.
If the exam or imaging raises any concern, your doctor will refer you to a urologist. In some healthcare systems, this referral happens on an urgent timeline. In the UK, for instance, guidelines call for an urgent specialist referral if you have a painless testicle that’s growing in size or a change in its shape or texture. Similar urgency applies in most healthcare settings when cancer is a possibility.
When to Go to the Emergency Room Instead
A lump by itself, without pain, is not an emergency. But sudden, severe pain in one testicle is. That pattern points to testicular torsion, where the cord supplying blood to the testicle twists and cuts off circulation. This needs treatment within hours to save the testicle.
Go to the ER if you experience sudden intense pain in one testicle along with any of these: painful swelling on one side, nausea or vomiting, discoloration of the scrotum (red, purple, or darker), one testicle sitting noticeably higher than the other, abdominal pain, or fever. Even sudden pain alone, without other symptoms, is reason enough to seek emergency care immediately.
What Happens at the First Appointment
Your doctor will feel the lump to assess its size, firmness, and exact location. Where the lump sits matters. A mass within the testicle itself carries different implications than one on the surface or in the surrounding tissue. A varicocele, for example, is a cluster of swollen veins that typically appears on the left side and feels like a “bag of worms” above the testicle. Fluid-filled cysts (spermatoceles or hydroceles) tend to feel smooth and sit near but separate from the testicle.
The physical exam alone can narrow things down significantly, but imaging almost always follows. A scrotal ultrasound is the standard first test. It’s painless, takes about 15 to 20 minutes, and gives a detailed picture of whether the mass is solid or fluid-filled, where exactly it sits, and whether it has its own blood supply. Masses with increased blood flow are more suspicious, though the absence of blood flow doesn’t rule out cancer entirely.
Blood Tests Your Doctor May Order
If the ultrasound shows a solid mass inside the testicle, your doctor will likely order blood work to check for three specific proteins that certain testicular cancers release into the bloodstream. These are sometimes called tumor markers. One is linked specifically to non-seminoma cancers and is never elevated in pure seminomas, which helps doctors begin classifying the type of tumor before any tissue is removed. The other two markers can be elevated in multiple cancer types and help gauge how advanced the disease might be.
Normal results on these blood tests don’t rule out cancer on their own, but elevated levels give doctors useful information about what they’re dealing with and how to plan next steps.
Most Lumps Are Not Cancer
It’s worth knowing that the majority of scrotal lumps, especially ones found outside the testicle itself, are benign. The most common causes are cysts, fluid buildup around the testicle (hydrocele), and varicose veins in the scrotum (varicocele). These conditions are generally painless and often don’t require treatment unless they cause discomfort or grow large.
That said, the picture changes for masses found within the testicle. Most palpable tumors inside the testicle in adults do turn out to be malignant. In contrast, about 80 percent of small masses found incidentally on imaging (ones you can’t feel) are benign. Children have better odds as well, with 20 to 40 percent of testicular tumors in kids being non-cancerous. This is exactly why getting checked matters. Your doctor needs to determine whether the lump is inside or outside the testicle, because that distinction drives everything that follows.
What a Urologist Does Differently
If your primary care doctor refers you to a urologist, it typically means the ultrasound showed something that needs closer attention or the physical exam was inconclusive. A urologist has specialized training in male reproductive conditions and can perform procedures your primary care doctor cannot.
For a suspicious solid mass inside the testicle, the urologist will discuss surgical options. Unlike most cancers, testicular masses are not biopsied with a needle. Instead, the standard approach involves removing the affected testicle through a small incision in the groin. This sounds drastic, but it serves two purposes: it removes the tumor completely and provides tissue for a definitive diagnosis. If the mass turns out to be cancerous, this surgery is often the primary treatment, and most men recover within a few weeks.
For benign findings, the urologist may recommend monitoring over time, a minor procedure to drain fluid, or simply reassurance that no treatment is needed.
Don’t Wait to Get Checked
Testicular cancer, when it is the cause, is one of the most treatable cancers. Outcomes are significantly better when it’s caught early. A painless lump that doesn’t go away within two weeks deserves a doctor’s attention. You won’t need a referral letter to see your primary care doctor, and the initial visit is straightforward: a brief physical exam and, most likely, an ultrasound order. From there, your doctor will tell you whether you need a specialist or whether the lump is something you can safely leave alone.