Borderline tumors are a special category of epithelial ovarian tumors that share both benign and malignant features. Women who have borderline tumors, if found at an early stage, have an excellent prognosis. With the advancement of transvaginal sonography, the likelihood of finding these ovarian lesions at an early stage, when a conservative treatment can be used, is high. Borderline tumors tend to occur in women of reproductive age. Therefore, accurate preoperative diagnosis is important so a fertility-sparing procedure can be employed whenever possible.
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