My sister was diagnosed 4 weeks ago with stage 2 ovarian cancer. I'm worried sick. She went to A&E with awful abdominal pain, but has Ulcerative Colitis a number of years so thought it was that. But they found a 13cm fluid-filled mass in her ovary. They drained the fluid off with keyhole surgery and now she has been told its stage 2 ovarian cancer. Surgery to happen in 2 days. There's been 6 weeks between the operations, my question is, how likely is the cancer to have spread and become stage 3 or 4 by now?