Week 706: Case 3

1. Presented by Dr. Epstein and prepared by Dr. J. David Peske.

Clinical History: A 45 year old man presented with a 3 cm testicular mass and an orchiectomy was performed. At our institution, an extensive study was performed which was negative for multiple keratins, STAT6, desmin, and myogenin. FISH showed no evidence of X:18 translocation. SF-1, inhibin, and ER were diffusely positive.

Choose the correct diagnosis: