RESUMEN
Testis germ cell tumor is the most frequent cancer in men between 15 and 35 years old. The therapeutic results of radical orchiectomy and chemotherapy reaches 90% free disease survival al the present time. This great chemosensibility is opening new doors to alternative therapeutic options, directed to preserve the sufficient amount of tissue to avoid the problems derived from testicular insufficiency. Such alternatives are clearly beneficial in bilateral germinal tumors or in solitary testis. In this article we describe a case of seminoma developed in a solitary functional testis managed in a conservative approach: organ preserving surgery and surveillance. We analyzed the indications and international results of such approach based on the best evidences now available.