<prompt> Which of the following can occurs in ovary, rectum and appendix -MetastasisNebothian folliclesPara ovarian cystEndometriosis  <response>: Ans. is d Endometriosis Ref. Shaws, 13e, p 439 12e, p 370.Endometriosis is widely dispersed. It occurs anywhere throughout the lower pelvis. The common sites are ovaries, cul-de-sac including the uterosacral ligaments, peritoneum overlying the bladder, sigmoid colon, back of the uterus, intestinal coils and appendix.It can also be seen in umbilicus following operation in laparotomy scars, in tubal stumps following sterilization. 