How to deal with リストカット跡 at the annual check health (健康診断)

Hi,

I will start university in April in Japan and I know I’ll need to do the health check in the university to start attending it. Many years ago I’ve cutted myself so I’m a bit worried about the fact that doctors or other students might notice it, that is why I wanted to ask to people who experienced it to explain me about the process and if it is avoidable to get noticed somehow.

Ps: I’ve stopped cutting long time ago and my mental health state is not anymore bad as it was in the past. I would just like to avoid getting unwanted attentions if possibile.