Finding an unexpected lump on your body can be incredibly alarming, especially when it is painful. Even Hollywood heavyweights aren’t immune to these moments. Action star and WWE legend Dwayne “The Rock” Johnson recently opened up about a terrifying health scare involving a painful lump in his testicles, proving that sudden medical worries can catch absolutely anyone off guard.

In an interview with Esquire, Johnson shared that he was in the middle of a grueling press tour for his upcoming Jumanji film when he made an unexpected discovery. To save his wife, Lauren Hashian, from unnecessary anxiety, he decided to keep the situation a secret while he sought medical advice. His doctor noted the lump could be a simple infection but cautioned that testicular cancer was a real possibility, requiring an immediate ultrasound. Johnson admitted that the agonizing 24-hour wait for his scan results felt like a massive emotional burden.

Fortunately, the follow-up scans brought excellent news: the lump was completely benign. By opening up about this vulnerable experience, Johnson is using his platform to remind men everywhere to pay close attention to their bodies and get checked early. To help you stay informed, let’s dive into how these anatomical changes develop and the key warning signs you should always keep on your radar.

How does testicular cancer start?

Testicular cancer begins when normal (healthy) cells in the testicles change into abnormal cells that multiply uncontrollably. Testicles are the male reproductive glands that produce sperm cells and the hormone testosterone, and are contained within the scrotum.

The Mayo Clinic says that virtually every type of testicular cancer develops in the germ cells, the specialized cells in the testicles that produce immature sperm. Under normal biological conditions, germ cells proliferate regularly to support reproductive health.

However, if there’s a genetic defect that changes the DNA code of these germ cells, they will not die off normally. Rather, they multiply rapidly and group together, forming a hard, localized mass of tissue that later invades neighboring structural layers.

What’s happening in your body

If a mass or an acute inflammatory lesion forms within the scrotum, specific painful physiologic changes occur in the surrounding tissues, explains Healthline. For Dwayne Johnson, his diagnostic ultrasound showed that it was not a cancerous tumor, but a very common problem called epididymitis.

According to the Cleveland Clinic, epididymis is a curved tube that encircles the back of each testicle and stores and transports mature sperm cells. If this fragile network is irritated or infected, the blood vessels in the area dilate, and immune cells arrive. This intense internal response results in a lump that hardens and grows quickly and is exquisitely tender.

The scrotum is richly innervated and has a high level of sensory innervation; this sudden swelling exerts mechanical pressure on the surrounding tissues, producing sharp, radiating pain that makes the mass impossible to ignore.

Causes of testicular lumps

Dr. Justus Rabach, MD, tells Blavity Health, “No one yet knows exactly what causes testicular cancer. But researchers have identified several structural factors that are associated with an increased baseline risk of malignant germ cell tumor in men, with the most significant such factors being an undescended testicle (cryptorchidism) in childhood and a direct family history of the disease.”

Many different medical conditions could cause scrotal lumps, from treatable and simple bacterial infections to serious and malignant cancers. Acute epididymitis is the most common cause of non-cancerous lumps, and is usually caused by a localized urinary tract infection or an ascending sexually transmitted infection, according to the CDC.

Another common cause of a benign mass is a hydrocele, the buildup of excess fluid in the thin layer surrounding the testicle, according to the National Institutes of Health (NIH). Patients may also develop spermatoceles, which are fluid-filled, benign cysts that form within the epididymis.

Health risks and complications

If you do not seek immediate medical attention to address a new scrotal lump, you expose yourself to serious health risks with potential permanent loss of reproductive and systemic health. The cancer cells can readily detach from the main tumor and silently circulate through the local lymphatics if the malignant tumor is not treated.

Testicular cancer cells commonly spread directly to the retroperitoneal lymph nodes, which are deep in the back of the abdomen, according to the Mayo Clinic. Then the advanced malignancy can move to the blood vessels, which is how the cancer can deeply invade other important organs, such as the lungs, liver and brain.

What to do about scrotal pain and lumps

The best way to detect early changes in the testicles is to stand under a warm shower and do a quick self-examination once a month. The water temperature has the added benefit of relaxing the scrotal skin, making it very easy to feel each testicle between the thumb and fingers for a small (pea-sized) hard lump or any changes in its structure.

If you find an abnormal lump or notice that your scrotum has suddenly swollen, your first step should be to seek a medical evaluation from a professional. If the cause is benign and inflammatory, such as epididymitis, a course of targeted oral antibiotics and anti-inflammatory medications is usually recommended to eliminate the underlying infection and reduce swelling in the affected tissue, which is painful.

Patients are advised to lie on their back at home, wear a supportive jock strap to limit mechanical stresses, and place a cloth-wrapped cold pack on their area for 15 minutes every couple of hours to reduce physical discomfort until clinical results are obtained. Never try self-diagnosis or massage the area, as rough handling can make the underlying infection worse or hasten irritation of the tissues.

When to see a doctor

If you feel a firm, painless lump, a heavy feeling in your scrotum, or a dull ache in your lower abdomen, you should make an appointment to see your primary care physician or a urologist right away.

Doctors use a full spectrum of diagnostic screening tools to ensure the scrotal mass is accurately identified. Your care team will conduct a thorough physical examination, conduct routine blood tests to look for certain tumor markers (such as AFP and beta-HCG), and schedule a high-resolution scrotal ultrasound exam.

Because ultrasound uses safe sound waves rather than X-rays, it can produce clear images of internal structures, enabling radiologists to easily determine whether it is a benign fluid-filled cyst, an inflamed tube or a malignant solid mass. In cases of sudden, severe, agonizing testicular pain with nausea, do not attend regular clinic times and go directly to the nearest emergency department in case of a medical emergency (such as testicular torsion).

Is testicular cancer 100% curable?

Testicular cancer has one of the absolute highest cure rates in the practice of oncology, although no cancer can be called “cured” with absolute mathematical certainty.

When testicular cancer is diagnosed early, before it penetrates the gland’s outer layers, the survival rate is excellent (99%), according to NIH. Even in very advanced patients with germ cell tumors at a distant site, the disease is extraordinarily sensitive to modern cisplatin-based chemotherapy regimens and surgery.

Because of this high responsiveness, oncologists can cure virtually all advanced cases, and early, proactive screening for diagnosis is a powerful tool to improve long-term survival rates.

“The vast majority of men, after testicular cancer treatment, can go on and have a family as normal,” says Dr. Robert Huddart of The Institute of Cancer Research in London.

Which celebrities have had testicular cancer?

A group of prominent athletes, entertainers, and public figures has come forward to tell their stories of surviving testicular cancer in a bid to raise awareness around the world. Well-known survivors include professional cycling champion Lance Armstrong, who had an advanced metastatic germ cell tumor spread to his lungs and brain.

Other celebrities who have revealed their diagnosis include top professional baseball player Anthony Rizzo, a standard-setting Olympian skater, Scott Hamilton and popular TV personality Tom Green. These survival stories are transparent and have played a significant part in breaking the social taboo around male reproductive health, enabling millions of young men to carry out routine self-examination without fear or embarrassment.

Bottom line

Dwayne Johnson’s recent medical scare highlights that while discovering a painful testicular lump is an incredibly frightening experience, many scrotal masses stem from treatable, non-cancerous conditions like epididymitis. Because individual cell mutations can silently trigger aggressive germ cell tumors, an immediate clinical evaluation and a diagnostic ultrasound are the only definitive ways to rule out malignancy. By remaining dedicated to routine self-examinations and seeking prompt medical attention for any structural anomalies, men can successfully safeguard their long-term reproductive health.

Frequently Asked Questions

At what stage is testicular cancer most common?

Testicular cancer is most frequently diagnosed in its earliest, localized stage (Stage 1), primarily because the prominent formation of a hard, physical lump allows patients to notice the anomaly quickly during routine personal care.

What is the deadliest cancer for men?

According to comprehensive epidemiological mortality tracking datasets maintained by the CDC, lung cancer remains the deadliest cancer for men globally, claiming more lives annually than prostate and colorectal malignancies combined.

Citations

Segarra E. Dwayne “The Rock” Johnson reveals “really painful” cancer scare. USA TODAY. Published June 11, 2026. Accessed June 23, 2026. https://www.usatoday.com/story/entertainment/celebrities/2026/06/11/the-rock-cancer-scare-dwayne-johnson-epididymitis-esquire/90505869007/

Wint C. Scrotal Masses. Healthline. Published June 2018. https://www.healthline.com/health/scrotal-masses

Cleveland Clinic. Male reproductive system. Cleveland Clinic. Published May 8, 2023. https://my.clevelandclinic.org/health/body/9117-male-reproductive-system

CDC. Epididymitis – STI Treatment Guidelines. www.cdc.gov. Published July 14, 2021. https://www.cdc.gov/std/treatment-guidelines/epididymitis.htm

Sayedin H, Chalokia R, Woderich R. Hydrocele Masking Testicular Tumour With Extensive Nodal Disease: A Case Report and Literature Review. Curēus. Published online August 14, 2023. doi:https://doi.org/10.7759/cureus.43455

Mayo Clinic. Testicular cancer – Diagnosis and treatment – Mayo Clinic. Mayoclinic.org. Published 2018. https://www.mayoclinic.org/diseases-conditions/testicular-cancer-care/diagnosis-treatment/drc-20352991

Gaddam SJ, Chesnut GT. Testicle Cancer. PubMed. Published May 27, 2023. https://www.ncbi.nlm.nih.gov/books/NBK563159/

CDC. Lung Cancer Statistics. Lung Cancer. Published June 12, 2024. https://www.cdc.gov/lung-cancer/statistics/index.html