Studies from H.A. Chao and co-authors have provided new information about endometrioma.

"Ovarian remnant syndrome is a rare gynecologic complication, mostly induced by difficult salpingo-oophorectomy with the residual ovarian tissue on the pelvic side wall. This is a report of a rare case of ovarian remnant syndrome at a port site after laparoscopic oophorectomy and a review of the related literature," investigators in Taiwan report (see also Endometrioma).

"A 22-year-old virgin had a laparoscopic oophorectomy for an endometrioma 5 years earlier. Postoperatively, she visited gynecologic clinics for a frequent painful sensation at the left port site. After sonographic examination and under the impression of a recurrent endometrioma, laparotomy and cyst excision were performed. Surprisingly, ectopic ovary was diagnosed by the pathologist. Review of the literature revealed ovarian remnant implantation at a port site as a very rare type of ovarian remnant syndrome. During laparoscopic oophorectomy in a woman without sexual exposure who is not a good candidate for culdotomy, the removal of the excised ovary through the port site is sometimes difficult and residual ovarian ...