Schiller- Duval bodies is seen in -

Ans. is 'c' i.e., Endodermal sinus tumor o Yolk sac tumor (endodermal sinus tumor or infantile embryonal carcinoma) - Schiller - Duval bodies,o Leydig (interstitial) cell tumor - Reinke crystalloids.Note : - Rienke crystals are also seen in the hilus cell tumor of ovary.