TY - CHAP M1 - Book, Section TI - Management of the Adnexal Mass A1 - Salani, Ritu A1 - Nagel, Christa A2 - Karlan, Beth Y. A2 - Bristow, Robert E. A2 - Li, Andrew J. PY - 2015 T2 - Gynecologic Oncology: Clinical Practice and Surgical Atlas AB - Uterine adnexae are defined as the areas adjacent to the uterus that are occupied by the fallopian tubes and ovaries. The embryologic origin of the fallopian tubes and ovaries are 2 distinct events in the development of a female embryo. Development of the ovaries begins before the development of the remainder of the genital tract. The origin of the male and female gonads are similar up until the seventh week of gestation, at which time the primitive sex cords begin to break up in the female embryo. The developing ovary eventually has 3 layers: the surface epithelium, primitive germ cells, and sex cord epithelium. These layers give rise to the 3 main types of ovarian tumors: (1) epithelial tumors, which comprise approximately 70% of all ovarian neoplasms; (2) germ cell tumors, which comprise 15% to 20% of ovarian tumors; and (3) sex cord–stromal tumors, which account for 5% to 10% of ovarian tumors. The remainder of the masses are a result of metastatic or secondary involvement to the ovary.1 SN - PB - McGraw-Hill Medical CY - New York, NY Y2 - 2024/03/29 UR - obgyn.mhmedical.com/content.aspx?aid=1106570746 ER -