Only if it is causing problems, i.e. sometimes when the ovary twists round the pedicle, it can stangulate the blood supply. Usually the fibroma, not the ovary is removed. Sometimes cysts develop on the ovaries during the menstrual cycle. These can be left and monitored unless they have an unusual appearance, in which case these too can be removed but only on the advice of healthcare professionals with experience of Gorlin Syndrome.