A woman about to undergo surgery.
When you are required to have surgery, this is an example of a situation where you undergo surgery.
transitive verb-·went′, -·gone′, -·go′ing
- to experience; endure; go through
- Obs. to undertake
transitive verbun·der·went, un·der·gone, un·der·go·ing, un·der·goes,
(third-person singular simple present undergoes, present participle undergoing, simple past underwent, past participle undergone)