Adenomyosis and Fertility: The 'Sister' Condition to Endometriosis

What is Adenomyosis? While endometriosis occurs when tissue similar to the uterine lining grows OUTSIDE the uterus, adenomyosis occurs when that tissue grows deep INTO the muscular wall of the uterus itself. This causes the uterine wall to grow thick, enlarged (sometimes described as 'boggy' or 'globular'), and severely inflamed. How does it affect fertility and IVF? Adenomyosis impacts the uterus's ability to host an embryo: - Inflammation: The constant bleeding into the muscle creates a highly inflammatory and toxic environment that hinders embryo implantation. - Impaired Muscle Contractions: The affected uterine muscle contracts abnormally, which may interfere with sperm transport or physically disrupt an implanting embryo. - Altered Endometrium: The lining covering the adenomyosis may have abnormal immune functions and altered proteins, reducing receptivity. Diagnosis: Historically, adenomyosis was only definitively diagnosed post-hysterectomy. Today, it can be strongly suspected and diagnosed using high-resolution transvaginal 3D ultrasound or pelvic MRI, usually interpreted by a specialist. Treatment Options Before IVF: Because the tissue is embedded in the muscle, surgery is extremely difficult and risks severe damage to the uterus, unlike fibroid removal. Therefore, treatment is primarily medical to suppress the inflammation before transferring an embryo: 1. GnRH Agonist Down-Regulation: The most effective approach for IVF patients. Medications like Leuprolide are given for 2-3 months to induce temporary menopause. This shrinks the adenomyotic tissue, drastically reduces inflammation, and 'resets' the uterus. An embryo transfer follows immediately after this suppression period. 2. Letrozole Protocols: Sometimes used in conjunction with GnRH agonists to deeply suppress estrogen production. Pregnancy with Adenomyosis: Women with adenomyosis can and do have healthy babies. However, they require close monitoring, as they are at a slightly higher risk for premature delivery and postpartum hemorrhage.