We're back, a bit disgustingly, in the realm of medical jargon...
So, there's a minor gyn(a)ecological operation, dilation and curettage, or D&C, in which the cervix is dilated and stuff that doesn't need to be in the uterus is removed by one or another method. This term is used in both the US and UK, but in the UK, when the procedure takes place after a pregnancy (usually after a miscarriage), it is called an ERPC (sometimes ERPoC), or Evacuation of Retained Products of Conception. (I have found this term in a US medical journal, but when I said it to an American gyna(e)cologist, she was completely unfamiliar with it.)
Why the variation in the two countries? I have no idea. Any medical insights?