The usual treatment is surgery. The surgery usually is a fertility-sparing unilateral salpingo-oophorectomy. For malignant<unk> s, the surgery may be radical and usually is followed by adjuvant chemotherapy, sometimes by radiation therapy. In all cases, initial treatment is followed by surveillance. Because in many cases<unk>  does not produce elevated<unk>  markers, the focus of surveillance is on repeated physical examination and imaging. Given that many cases of<unk>  of the ovary are hereditary, referral to a clinical genetics service should be considered. The prognosis is generally good as the<unk>  tends to grow slowly and usually is benign: 25% are malignant. For malignant<unk> s with undifferentiated histology, prognosis is poor.
Sertoli–Leydig cell tumour
Granulosa cell tumour
Sertoli cell tumour
Sex cord–gonadal stromal tumour
Ovarian fibroma
Seminoma
Follicular cyst of ovary
Corpus luteum cyst