<prompt> Sex cord stromal tumors are all except:Granulosa cell tumorLeydig cell tumorYolk sac tumorSertoli cell tumor  <response>: Ans: C Yolk sac tumor Ref: Shaws Textbook of Gynaecology 15th EditionExplanation:WHO Classification of Ovarian tumorsCommon epithelial tumors: Serous tumors Mucinous tumors Endometrioid tumors Clear cell mesonephroid tumors Brenner tumors Mixed epithelial tumors Undifferentiated carcinoma Unclassified epithelial tumorsIISex cord gonadal stromal tumors: Granulosa-stromal cell tumors, theca cell tumors Androblastomas: Sertoli-Leydig cell tumors Gynandroblastomas UnclassifiedIIILipid lipoid cell tumorsIVGerm cell tumors: Dysgerminoma Endodermal sinus tumor Yolk sac tumor Embryonal carcinoma PoSyembryoma Choriocarcinoma Teratoma Mixed formsVGonadoblastoma: Pure Mixed with dysgerminoma or other germ cell tumorsVISoft tissue tumors not specific to ovaryVIIUnclassified tumorsVIIISecondary metastatic tumorsIXTumour-like conditionsClassification of Sex Cord-Gonadal Stromal Tumours by Their Histology Celltissue normal location OvaryFemaleTesticleMaleMixedCelltissuetypeSex cordGranulosa a cell tumourSertoli cell tumourGynandroblas-toma GonadalstromaThecoma,fibromaLeydig cell tumorGynandroblas-toma Mixed Sertoli-Leydig cell tumorGynandroblas-toma 