How big are the testicles of a 2-year-old boy?

Patient's question:

No

Doctor's answer:

The testicles of children are generally considered normal as long as they have descended into the scrotum without swelling. Adult testicles are typically 3.5-4.5 cm long, 2-3 cm wide, and 1-2 cm thick, with each testicle weighing 10-15 grams. Generally, the left testicle is about 1 cm lower than the right. Some people may have one testicle larger/smaller or higher/lower than the other, but as long as the difference is not significant, it is considered normal.