I know it's ridiculous to post at this stage, but I'd really like to know what the possibilities are.
After something abnormal was seen on a CT scan, as well as a fibroid that had grown a bit, I had a transvaginal ultrasound yesterday. The fibroid is nothing to worry about, but the radiologist (is that who does ultrasound?) saw some kind of growth outside my uterus; she showed me on the screen but I couldn't make out what it looked like. She said "That's big!" 
. It's about 7cm across. She said she'd talk to someone else, and email my GP, she thought they might want to refer me to a gynaecologist and maybe do an MRI scan.
This may all happen quite soon, I don't know, but of course I'm a bit spooked. I can't find any info online, only stuff about fibroids. I'm mid-60s, nearly 20 years post menopause, very healthy, no history of gynae problems, no bleeding, no pain. Occasional bloating.
Very grateful for ideas, similar experiences, expert or non-expert thoughts!