<prompt> In Dysgerminoma stage 1A, treatment of choice isTAH with BSOUnilateral ovariotomy with preservation of uterusBilateral ovariotomy with preservation of uterusBilateral salpingo-oophorectoy  <response>: Surgical management of dysgerminoma Veical midline abdominal incision Peritoneal washings Exploration of abdominal and pelvic organs Unilateral salpingoopherectomy with preservation of uterus Pelvic and paraaoic lymph node sampling Infraacolic omentectomy Removal of the other tumor masses Ref: Shaw Gynecology 17 e pg 469. 