I was diagnosed at 34 with stage 1b1 adenocarcinoma and the first oncologist recommended a radical hysterectomy with lymph node removal. I did go to a second oncologist and found that I was a candidate for a trachelectomy with lymph node removal. Basically, the difference is that with a trach, your cervix is removed but you retain your uterus so that you can still have children. I had my surgery almost a year and a half ago. I would strongly encourage everyone to always seek a second opinion. As far as is a hysterectomy standard for "invasive cancer"..I think it depends on what stage you are diagnosed with. However, all the research I have done does steer one towards a hysterectomy, or lately, a trach.
Good luck and take care!