PMC3687425_01
Histological section of Leydig cell tumor in the right testis. The tumor cells have abundant eosinophilic cytoplasm and round nuclei. H&E, 200x
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The microscopic examination revealed a nodular pattern of large polygonal cells with round nuclei and eosinophilic cytoplasm (Fig. 1).
Rete testis involvement, H&E, 100x
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Tunica albuginea and spermatic cord involvement were not seen; however, rete testis involvement was identified (Fig. 2).
Melan-A immunoreactivity in tumor cells, 200x
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Immunohistochemically, the tumor cells were positive for inhibin-alpha, melan-A and CD56, but negative for ACTH and p53 (Fig. 3).