Which is the commonest malignancy of ovary?
Serous type
Mucinous type
Dermoid cyst
Granulosa cell tumor
Serous cystadenoma and cystadenocarcinoma are amongst the most common of cystic ovarian neoplasm, accounting about 50% of all ovarian tumors, of these 60% are benign, 15% borderline and 25% are malignant. Of the all cystic tumors of the ovary 5 to 10% are dermoids. Dermoid cyst is usually unilocular, with smooth surface seldom attaining more than 15 cm in diameter. Granulosa cell tumours are fairly common and represents 10% of all solid ovarian tumours. Ref: Shaw's Textbook of Gynaecology, 13th Ed, Page 358-359.