Hi
I have teratoma removed (approx 11cm) on my Right ovary 2 years ago. A regular half yearly ultrasound has been done. Recently, there is a 3.1x3.0x2.3cm cyst (simple) found on my right ovary, estimated volume of 30cc. Endometrial thickness is 12mm which is in secretory phase. Uterus measures 7.8x4.2x3.4cm.

Fyi, I was on the very last day of my period when I had the ultrasound. I do notice that my period brought forward a week since the last two months.

I am 33 years old female

What kind of test should I do to ensure whether the cyst is malicious? Will it be developed / group bigger? What are the examinations can I follow for check up?

Much appreciated.

This is something that you will have to discuss with your OB/GYN. Any advice given to you over the internet by virtual strangers could be dangerous to your health.