Mc benign epithelial ovarian tumor is
Serous cystadenoma
Mucinous cystadenoma
Brenner tumor
Ovarian fibroma
Serous cystadenoma and cystadenocarcinoma
Serous cystadenoma and cystadenocarcinoma are amongst the most common of cystic ovarian neoplasms, accounting about 50% of all ovarian tumours; of these, 60-70% are benign, 15% borderline and 20-25% are malignant.