How is morphology of leydig cell tumor?

➢ Neoplastic Leydig cells have an appearance that is similar to their normal counterparts. ➢ Large in size, round or polygonal cell outlines, abundant granular eosinophilic cytoplasm, and a round central nucleus. ➢ Nests and clusters ➢ The cytoplasm frequently contains lipid droplets, vacuoles, or lipofuscin pigment, and, most characteristically, rod-shaped crystalloids of Reinke, (25% of the tumors). ➢ Many intervening capillaries, typical of endocrine tissue