<prompt> Most common ovarian tumor to undergo torsion:Benign cystic teratomaDysgerminomaSerous adenomaBrenners tumor  <response>: Ans. is a i.e., Benign cystic teratoma Benign cystic teratoma dermoid cyst is the MC benign germ cell tumor and also the MC ovarian tumor to undergo torsion as it has a lot of fat content, it is more prone to torsion in nonpregnant patients as well as in pregnancy. 