<prompt> Commonest ovarian tumour below 20 year of age is -Epithelial cell tumourSertoli call tumourLeydig cell tumourGerm cell tumour  <response>: Ans. is d Germ cell tumour Ref : Shaws, 13e, p 359 12e, p 575.Most common ovarian tumour in young woman is - germ cell tumourcommon ovarian tumour overall - epithelial cell tumour.Commonest cystic ovarian neoplasm - serous cystadenoma.Ovarian tumour causing pseudomyxoma peritonei - Mucinous tumourOvarian tumour causing Meigs syndrome - ovarian fibroma.Ovarian tumour causing pseudo Meigs syndrome - Brenner tumour. 