What is the reason for one testicle being larger than the other?

Patient's question:

I always feel like one testicle is bigger than the other, is it a disease? Or is it caused by excessive force when solving it in the past?

Doctor's answer:

The testes of a normal adult male are oval-shaped, measuring 3.5-4.5 cm in length, 2-3 cm in width, and 1-2 cm in thickness, with each testis weighing 10-15 grams. Generally, the left testis is about 1 cm lower than the right. Some individuals may have one testis larger/smaller and one higher/lower, but as long as the difference is not significant, it is considered normal. Common diseases that can lead to abnormal testicular development include insufficient hormone secretion, testicular diseases, and tumors. Given that the testes are an important site for sperm production and the perceived size difference can significantly affect male fertility, it is recommended to visit the hospital for a follow-up examination. Through detailed and thorough examinations by doctors and laboratory tests, it can be determined whether the condition is indicative of a disease, allowing for timely and appropriate treatment. Wishing you good health!

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