Retroperitoneal Leydig cell tumor recurrence presenting 14 years after orchiectomy.

Malignant Leydig cell tumor is a rare entity that has been previously described as rapidly progressive and uniformly fatal. We present the case of a malignant Leydig cell tumor that presented 14 years after orchiectomy with an isolated retroperitoneal metastasis. Our patient underwent a retroperitoneal lymph node dissection and has been free of recurrence or progression at 12 months of follow up. Additionally, we describe the symptomatic hormone dysfunction experienced by our patient as a result of his tumor.