Having testicles of different sizes is nothing to worry about in most cases. For most men, the left testicle hangs lower and the right testicle is slightly larger. As a general rule, it’s only worthy of a doctor visit if your testicles hurt or if one or both change shape.
Curious what makes one testicle larger? Here are few of the most common reasons:
Epididymal cyst
When fluid builds up in a duct, a fluid-filled sac may form. They’re typically painless and harmless and will go away on their own. But if the cyst becomes painful, they can be removed with surgery.
Orchitis
Men who catch the mumps can experience inflammation of the testicle or testicles. See a doctor if this happens, as orchitis can damage your testicles.
Epididymitis
If the duct behind the testes, called the epididymis, becomes inflamed, you probably have an infection. This sometimes happens when men contract chlamydia. Watch for other symptoms, such as discharge from the penis and pain when urinating.
A hydrocele
A fluid-filled sac around the testicles is called a hydrocele. It’s normally not worth a trip to the doctor‑unless you feel like your testicles are inflamed.
A varicocele
An enlarged vein in the scrotum is called a varicocele. Although you probably won’t need treatment if there are no additional symptoms, this testicular issue can cause a low sperm count.
Testicular torsion
Sometimes occurring after an injury, a testicular torsion occurs when the spermatic cord gets twisted due to a rotation of the testicles. Because it can cause severe pain—either continuously or intermittently, it’s important to treat it as an emergency. In severe cases, the cord can get so twisted that it reduces or blocks blood flow to the testicle, which requires the testicle to be removed.
Testicular cancer
If you find a lump or new growth, head to your doctor. Although testicular cancer isn’t very common, it’s important to know that it’s most prevalent in young and middle-aged men can is usually treated with great success.
