Borderline ovarian tumors are a subtype of epithelial tumors which present a high mitotic index and nuclear atypia without stromal invasion, with a better prognosis than ovarian cancer. They usually affect young patients, even in adolescence. The reproductive prognosis is compromised as a consequence not just of the pathology itself, but also diagnostic, staging and treatment techniques. In the last decade, new alternatives have been developed in the management of these tumors, with emphasis on fertility sparing procedures, even in advanced stages. We analyze two clinical cases assisted at Centro Hospitalario Pereira Rossell and review the latest literature, with focus on prognosis and treatment possibilities.