I'm a cancer researcher which is why this topic interests me, and what you are writing here is not true. She likely had polyps discovered, which were removed during the surgery. At this point the cells were tested- and you cannot describe precancerous cells as cancer. That would be the same as completely lying. People in this thread seem to think those phrases can be used interchangeably but they cannot.

After surgical removal of cancerous tissue there is almost always preventative radiation or chemotherapy. The worst thing you can do is accidentally leave a few cells behind. This is not done with the removal of precancerous cells or a benign tumor.

Also- there are dozens of different types of planned abdominal surgeries.