Ideas for a story: Temporary sex change

Hi, I'm new.

I'm wondering about writing a story that involves temporary sex change. What mean is the boy gains breasts and his male parts are just altered to resemble female genitalia. But after a while, he can regain his manhood and male looks if he needs to or does not want to be a girl. Are there any which I can look at? I specific want those that involve doctors performing the temporary change and contains medical terms.

Thanks.