When I lived in Tokyo I had two different experiences. Both times I thought I felt something strange on my balls, and after a bit of tentative Googling was freaked out enough to go have it looked at.
The first time I went to a local clinic near my home. In Japan you have to explain your problem to the nurse at reception, and depending on how crowded the waiting room is, it can be pretty embarrassing. After stumbling through a brief explanation I was shown through to the exam room, and the doctor had me lie down on a padded exam table, then lower my pants and underwear to about mid-thigh. Without putting on any gloves he quickly squeezed my testicles and pronounced them fine. I stumbled out, happy I didn’t have cancer, but still trying to process what had just happened. A later Google search revealed quite a few people had had the same experience at various clinics.
A few years later, after moving to a new part of town, a similar thing happened. Long story short, I was showering and thought I found something. Went through the whole routine of Googling what to do, and decided better safe than sorry. Once again I packed myself off to the doctor, explained what was wrong at the reception, and was shown in to an exam room. This time the doctor was a younger woman. I was really surprised - most doctors in Japan are older men. Between my surprise and embarrassment I barely managed to explain what the issue was. She asked me to stand next to her desk and pull my pants down. By this point I was sweating a bit, even though it was winter and the office was quite cold. I undid my belt and stood there in my underpants as she rolled over with a pair of white nitrile gloves. She asked me to undress again, and I pulled my underwear down while she watched. Like I said, the room was cold, and between that and the nerves everything had scrunched up.
I stood there as she pulled her gloves on, then gently cupped my testicles with one hand while gently squeezing them with the other. Unlike the first time she really took her time, pushing gently and confirming where I thought I had felt something. The exam room was totally quiet, my main memory was being able to hear her gloved fingers touching me. After she was done, and once again i was pronounced cancer-free I pulled my pants up and left as fast as I could. At the time I was really nervous, but now I think about it pretty often.