Hello and welcome,
I can completely understand the issue.
It is either a serous cystadenoma
[ a non cancerous tumor] or an ovarian cancer
The latter is more likely considering the age and rapid growth. Please get her CA 125 tested. This is raised in cases with cancer.
I also suggest that you see another doctor if possible as if it is a cancer it may need urgent surgery.
All my best wishes are with you. Take care.
Hope this satisfies your query.
Thanks for using HCM.
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist