Objective: We report a new case of Sertoli cell testicular tumor with malignant characteristics.
Methods: 77 year-old male patient, suffering a general wasting syndrome presenting with a left solid testicular mass with the diagnosis of malignant Sertoli cell tumor after orchyectomy, without local, regional or distant dissemination, and a benign outcome after 18 months of follow-up.
Results: Sertoli cell tumor or androblastoma is classified as non-germ cell tumor derived from the stroma of the sexual cords. There are three types depending on its cellular composition: calcified big cell, sclerotic cell, and the most frequent of all, the classic type.
Conclusions: Being the Sertoli cell testicular tumor rare, its malignant type is even rarer, accounting for not more than 10% of all. Despite the pathological characteristics related to malignancy, its posterior behaviour is unpredictable and not much known, the some than follow-up and treatment, because it is not sensible to cytostatic drugs. The existence of metastases continues to be the only valid parameter with prognostic value.