Schiller - Duval bodies are seen in-
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.
Teratoma
Seminoma
Yolk sac tumour
Chorio - carcinoma