Slide 81.Endometriosis, Ovary

A. Brief Descriptions:

  1. Definition: presence of endometrial glands or stroma in abnormal locations outside the uterus.

  2. Sites (in desecnding order of frequency): ovaries, uterine ligaments, rectovaginal septum, pelvic peritoneum, laparotomy scars, rarely in the umbilicus, vagina, vulva, or appendix

  3. Symptoms and signs: infertility, dysmenorrhea, pelvic pain, and other problems.

B. Gross Findings:

  1. "Chocolate cysts" : a moderately thin-walled cyst containing dark purple-brown, semisolid, sticky material.

C. Micro Findings

   Two of the three following features:

  1. Endometrial glands.

  2. Endometrial stroma.

  3. Old hemorrhage with hemosiderin-laden macrophage.

D. Others:


E. Reference:

  1. Robbins Pathologic Basis of Disease, 6th ed.  P.1057-1058.




Fig. 81-2 (LP)Cystic lesion walled by endometrial tissue in the ovarian parenchyma.




Fig. 81-2 (HP)Endometriosis with endometrial glands, endometrial stroma and hemorrhage.



Fig. 81-3 (LP)Cystic lesion and old hemorrhage with hemosiderin deposition.