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Published: 28/06/2022

Testicular lumps or swelling?  Could it be cancer?

Testicular lumps or swelling of the scrotum are very common and affect males of all ages. The first thing that often comes to mind is the fear of cancer. A testicular ultrasound scan, a quick and non-invasive examination procedure using sound waves, can accurately identify the cause of the lump or swelling. At our private ultrasound clinic in London, SonoWorld, we offer same-day affordable testicular scan appointments, so you don't have to endure the long wait for NHS appointments that can sometimes extend beyond six weeks.

The Anatomy of the Scrotum and Testicles

To understand the nature of testicular lumps and swelling, it's essential to be familiar with the anatomy of the scrotum and testicles. The testicles are the primary male reproductive organs housed in the scrotal sac and produce sperm and testosterone. The scrotal sac also contains the epididymis, a structure composed of interconnected tubules where sperm matures. This article will explore the most common types of testicular lumps and provide information on how an ultrasound scan can help identify their cause.

What are the Most Common Testicular Lumps?


It is prevalent for one to feel the head of the epididymis, which can give the impression of a lump. In most cases, the head of the epididymis can be felt on one side, but not the other. This normal anatomical structure shouldn't be a cause for concern.

Epididymal Cyst

Epididymal cysts are common and harmless. They are fluid-filled sacs mainly located on the head of the epididymis. Generally, epididymal cysts do not require treatment, but they have the potential to grow larger over time.


Epididymitis is an infection of the epididymis and sometimes the testis (when both are infected, it is called epididymo-orchitis). The epididymis becomes swollen and is often associated with pain. Antibiotic treatment is necessary for epididymitis, so the sooner it is confirmed, the sooner it can be treated.

Intratesticular Cyst

An intratesticular cyst is a small fluid-filled sac inside the testis, not the epididymis. These cysts are more commonly benign and generally do not pose a significant health risk.


Varicoceles occur when the blood vessels (pampiniform venous plexus) inside the scrotal sac become dilated to various degrees. They are similar to varicose veins in the legs and can affect sperm quality by increasing the temperature inside the scrotal sac. Varicoceles can also cause discomfort and may feel like worms, making it difficult to differentiate them from other lumps.


There are different types of hernias, but the most common is the inguinal hernia, which occurs in the groin region. Sometimes the hernia can slip through the inguinal canal into the scrotal sac, causing swelling.


A hydrocele is an accumulation of fluid around the testicle. Sometimes floating debris can be seen within this fluid, typically related to protein or cholesterol content. Hydroceles are benign but may require treatment if they become very large. Although the presence of a hydrocele is often apparent, an ultrasound scan is necessary to exclude other abnormalities, such as cancer.

Testicular Cancer

Testicular cancer is relatively common, and according to Cancer Research UK, the incidence of testicular cancer will rise to 10 cases per 100,000 males by 2035. Testicular cancer has various appearances on ultrasound, but most commonly presents as a dark, rounded, well-defined circle with high vascularity. If the ultrasound scan is suspicious of testicular cancer, an urgent referral to a urologist within two weeks is required.

In Conclusion

Scrotal lumps and swelling are widespread and affect males of all ages. In most cases, these lumps are benign, and sometimes what is felt is merely normal anatomy. However, it is essential to rule out the possibility of a cancerous lump, and a testicular ultrasound scan can provide the necessary confirmation.

Why Choose SonoWorld for Your Testicular Ultrasound?

NHS waiting times can be lengthy, and receiving a timely diagnosis is crucial for peace of mind and prompt treatment. At SonoWorld London, you can book a testicular ultrasound scan at a day and time that suits you, ensuring quick diagnosis and reassurance.

Expertise and Experience

Our team of experienced sonographers at SonoWorld are skilled in detecting and diagnosing various testicular conditions. We utilize the latest ultrasound technology to provide accurate and detailed imaging, allowing for a comprehensive assessment of your testicular health.

Comfort and Privacy

We understand that undergoing a testicular ultrasound can be a sensitive and potentially stressful experience. At SonoWorld, we prioritize your comfort and privacy, ensuring a discreet and professional examination in a calm and supportive environment.

Affordable and Accessible Healthcare

We believe that everyone should have access to high-quality healthcare when they need it. That's why we offer affordable testicular ultrasound scans, allowing you to receive the medical attention you require without the financial burden.

Take Control of Your Testicular Health

Don't let the fear of testicular lumps or swelling go unaddressed. Book an appointment with SonoWorld today for a thorough and accurate testicular ultrasound scan that can provide the answers and reassurance you need. For more information about our services and to schedule your testicular ultrasound, visit our website or contact us directly. Your health and well-being are our top priorities, and our dedicated team is here to help you take control of your testicular health.
Ultrasound clinic london registered and regulated by CQC
Ultrasound London Clinic Address:
29 Weymouth Street, Marylebone, London, W1G 7DB
Phone: 020 3633 4902 Email: info@sonoworld.co.uk or sonoworlduk@gmail.com
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