Uneven Testicles: Size Discrepancies in Adolescents - Urology

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One testicle is larger than the other?


During puberty, experiencing nocturnal emissions, the larger testicle has a soft mass while the smaller one does not.

Xiao Ru, 10~19 year old female. Ask Date: 2021/02/10

Dr. Li Xinyi reply Urology


Schools conduct health check-ups, so you can just ask the examining physician.
Otherwise, you would need to visit a urologist for an in-person examination.

Reply Date: 2021/02/10

More Info


When it comes to the development of the male reproductive system during puberty, it is not uncommon for adolescents to experience some degree of asymmetry in testicle size. In fact, it is quite normal for one testicle to be slightly larger or hang lower than the other. This is due to the anatomical structure of the scrotum and the way the testicles descend during development.

In your case, you mentioned that you are experiencing a size discrepancy between your testicles, with one being larger and having a "soft" area, while the smaller one does not. It is important to understand that during puberty, the testicles undergo significant changes, including growth and maturation. The presence of a soft area on the larger testicle could be a number of things, including normal tissue variations or possibly a benign condition. However, it is essential to monitor any changes in size, shape, or consistency, as these can sometimes indicate underlying issues.

The testicles typically begin to grow during early puberty, which can start as early as age 9 and continue into the late teens. The Tanner stages of sexual maturity provide a framework for understanding the progression of puberty. In Tanner Stage 2, which usually occurs around ages 11 to 12, the testicles begin to enlarge, and pubic hair starts to appear. By Tanner Stage 3, which can occur around ages 13 to 14, the penis begins to grow in length, and the testicles continue to develop.

If you are experiencing any discomfort, pain, or significant changes in the size or shape of your testicles, it is advisable to consult a healthcare professional. They can perform a physical examination and may recommend an ultrasound or other imaging studies to rule out conditions such as varicocele, hydrocele, or testicular torsion, which can sometimes present with similar symptoms.

In terms of the "soft" area you mentioned, it is crucial to differentiate between normal anatomical variations and potential medical concerns. A healthcare provider can help clarify this and provide reassurance or treatment if necessary.

In summary, while it is normal for testicles to vary in size during puberty, any concerning symptoms such as pain, significant asymmetry, or changes in texture should prompt a visit to a healthcare provider. They can offer guidance, reassurance, and any necessary interventions to ensure your reproductive health is on track as you continue to grow and develop.

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