<prompt> Schiller - Duval bodies are seen in-TeratomaSeminomaYolk sac tumourChorio - carcinoma  <response>: Yolk sac tumor endodermal sinus tumor or infantile embryonal carcinoma Schiller - Duval bodies.Leydig interstitial cell tumor Reinke crystalloids.Note : - Rienke crystals are also seen in the hilus cell tumor of ovary. 