Hi!
It is usually pretty easy to tell whether an ovarian tumor is a dermoid by looking at the ultrasound, and then the surgery should confirm that suspicion. These tumors are the most likely to twist as well. 99.4% of dermoids are benign ( non cancerous ).
Surgical removal is all that is necessary, and they don't come back again.
I hope this answers your question, and helps to ease your mind a bit.
Good luck!
Dr B
thank you for your prompt reply i appericate it very much.