This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological Disorders in Obs., Subject name: Gynaecology & Obstetrics
Schiller Duval bodies seen in : 
Select and explain. 
A. Endodermal sinus tumor, B. Embryonal carcinoma, C. Granulosa cell tumors, D. Leydig (hilus) cell tumors
A: Endodermal sinus tumor
Answer: A: Endodermal sinus tumor 
Explanation: Ans. is 'a' i.e., Endodermal sinus tumor Histologic Hallmarks of Ovarian TumorsOvarian Tumor DiametersHistologic CharacteristicSerous Epithelial tumorsPsammoma bodiesClear cell tumorsHobnail cellsBrenner tumorsWalthard cell restsDysgerminomaLarge polygonal cells, lymphocytic infiltration, and fibrous septaTeratomasSkin, teeth, bones, hair, cartilage, neural tissue, and thyroidEndodermal sinus tumorSchiller-Duval bodiesEmbryonal carcinomaEmbryoid bodiesGranulosa cell tumorsCall-Exner bodiesLeydig (hilus) cell tumorsReinke's crystalsKrukenberg tumorSignet ring cells