Endometriosis and infertility.

Area of Science:

• Gynecology
• Reproductive Medicine
• Pathophysiology

Background:

• Endometriosis is a complex gynecological condition often associated with infertility.
• The precise mechanisms linking endometriosis to reduced fertility remain incompletely understood.
• Understanding these mechanisms is crucial for developing effective fertility treatments.

Purpose of the Study:

• To review and examine the various proposed mechanisms by which endometriosis leads to infertility.
• To differentiate mechanisms based on the location of endometriosis (pelvic vs. ovarian).
• To assess the current evidence supporting each proposed mechanism.

Main Methods:

• Literature review of studies investigating endometriosis and infertility.
• Analysis of proposed pathophysiological pathways.
• Categorization of mechanisms by endometriosis location.

Main Results:

• Pelvic endometriosis induces a general inflammatory response, altering peritoneal fluid and impacting fertilization.
• Ovarian endometriomas contribute to infertility through inflammation, fibrosis, and subsequent depletion of ovarian reserve (reduced primordial follicles).
• Surgical interventions for endometriosis may also negatively affect ovarian reserve.

Conclusions:

• Multiple mechanisms, supported by varying degrees of evidence, link endometriosis to infertility.
• Inflammation and fibrosis in both pelvic and ovarian sites play significant roles.
• Further investigation is warranted for hypothetical mechanisms, while established pathways require clinical consideration.