<prompt> 18 year old female presents with an ovarian mass, her serum LDH placental alkaline phosphate are found to be elevated. What is the treatment of choice in this condition?BL oophorectomy post op radiotherapyOophorectomy on the involved sideOnly chemotherapyHysterectomy with bilateral salpingopherectomy  <response>: The given scenario suggests the diagnosis of Dysgerminoma Most common germ cell malignancy High risk: dysgenetic gonads, testicular feminisation syndrome Tumour markers: LDH, PLAP, hcg may be raised in some but AFP is normal In Dysgerminoma, conservative surgery UL Salphingo-Oophorectomy recommended as most patient are Young girls Post operative Chemotherapy gives 90 success NOTE: bilateral salpingo-oophorectomy is not done here in order to conserve ovarian function and feility unless mentioned that the presentation is bilateral. 