Although ovarian cancer ranks quite low for what concerns tumor incidence among women, it ranks fifth in cancer deaths among women and it is accountable for the largest number of deaths due to tumors of the reproductive system. These unfavorable statistics are due to the challenging nature of early diagnosis, as this type of cancer is often diagnosed in the more advanced stages of malignancy. It has been demonstrated that early recognition is crucial for the prognosis, having the potential of reducing mortality rates by approximately 40%. Transvaginal ultrasound, coupled with Doppler Flow Imaging, is the method of choice for assessing ovarian adnexal masses, through subjective assessment.