Collision Tumors of Ovary: A Rare Entity

Mature cystic teratoma of the ovary, contains derivatives of all three embryonic germ cell layers, rarely presents together with ovarian epithelial or sex cord-stromal tumors. In the available literature there is one similar case report in a non-child bearing young women. We report here a rare case of collision tumour of ovary comprising of bilateral mature cystic teratoma with serous cystadenoma right ovary in a 18 year-old girl.