In 1931, Elbe returned for her fourth surgery, to transplant a uterus and construct a vaginal canal. This made her one of the earliest transgender women to undergo a vaginoplasty surgery, a few weeks after Erwin Gohrbandt performed the experimental procedure on Dora Richter.

https://en.wikipedia.org/wiki/Lili_Elbe

by a matter of a few weeks, and by the same surgeon

Elbe had an orchiectomy performed by Erwin Gohrbandt in 1930, it was the first of these surgeries she had.