Is it normal for the two testicles to be different sizes?

Patient's question:

Detailed medical condition and consultation purpose: The right testicle is slightly larger than the left. Is this normal?

Doctor's answer:

Hello, the testicles of normal adult males are not the same size, and the right testicle is generally larger than the left. If you measure the size of your own testicles, the right testicle is slightly larger than the left. Calculated based on length, width, and thickness, the average size of the right testicle is 3.38cm x 2.37cm x 1.78cm, while the average size of the left testicle is 3.30cm x 2.27cm x 1.71cm. Even among individuals of the same age group, there can be significant differences in testicular size. However, if the volume of one testicle is above 15ml, its function is considered normal. If one testicle is smaller or larger than the other, it may indicate the presence of a disease, and it is important to seek medical attention from a urology department for examination and treatment.

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