Gynecologic Pelvic Mass:

Gynecologic Pelvic Mass:

• Large uterine fibroid.
• Ovarian mass.
  • Coelomic epithelial tumors: These tumors, which originate from the coelomic epithelium, constitute 80-85% of all ovarian tumors.
    • Serous cystadenoma and mucinous cystadenoma: Fifteen to 20% are malignant.
    • Endometrioid type and clear cell: Ninety-five to 98% are malignant.
    • Brenner tumor: Two percent are malignant.
  • Germ cell tumors: These tumors originate from the germ cell and constitute 10-15% of all ovarian tumors. All are malignant except mature teratomas and gonadoblastomas, which are always benign.
    • Mature teratoma.
    • Immature teratoma.
    • Dysgerminoma.
    • Gonadoblastoma.
    • Endodermal sinus.
    • Embryonal carcinoma.
    • Nongestational choriocarcinoma.
  • Gonadal-stromal cell tumors constitute 3-5% of all tumors.
    • Granulosa cell.
    • Fibroma: Fewer than 5% are malignant.
    • Thecoma: Fewer than 5% are malignant.
    • Sertoli-Leydig cell: Fewer than 5% are malignant.
    • Lipid cell type: Thirty percent are malignant.
    • Gynandroblastoma: One hundred percent are malignant.