What is Adenomyosis?
💡 Adenomyosis = endometrial tissue within the uterine muscle. Symptoms: severe dysmenorrhoea, heavy periods, enlarged boggy uterus, chronic pelvic pain. Diagnosed by TVS or MRI. Fertility impact: reduced implantation rate, higher miscarriage risk, uterine contractility dysfunction. No cure (short of hysterectomy). IVF: GnRH agonist downregulation improves outcomes. Often co-exists with endometriosis.
Adenomyosis is a condition in which endometrial glands and stroma (the tissue that normally lines the uterine cavity) are present within the myometrium (uterine muscle). This causes the uterus to enlarge and become "boggy," and produces severe dysmenorrhoea, heavy menstrual bleeding, and chronic pelvic pain. Adenomyosis impairs fertility through multiple mechanisms and is increasingly recognised as a significant cause of implantation failure and IVF underperformance.
🇮🇳 India Context: Adenomyosis is widely assessed and treated across major Indian fertility centres including Chennai, Mumbai, Bangalore, Delhi, and Hyderabad.
What are the key characteristics of Adenomyosis?
- Types: diffuse adenomyosis (widespread involvement of myometrium — commonest); focal adenomyoma (discrete nodule within myometrium — mimics fibroid on USS); superficial vs deep adenomyosis classification emerging
- Diagnosis: TVS (sonographic features: heterogeneous myometrium, myometrial cysts, asymmetric myometrial thickening, poorly defined endometrial-myometrial junction, subendometrial lines and buds); MRI — gold standard for extent mapping; diagnosis without hysterectomy is presumptive
- Symptoms: severe progressive dysmenorrhoea; heavy menstrual bleeding (menorrhagia); chronic pelvic pain; dyspareunia; uterine enlargement (uterus feels boggy and tender on examination)
- Fertility mechanisms: disrupted uterine peristalsis (adenomyotic uterus has abnormal contractility that may expel embryos or impair sperm transport); impaired endometrial receptivity (altered gene expression, reduced HOXA10, β3 integrin); increased free radical production; co-existing endometriosis common (in ~40%)
- IVF outcomes: adenomyosis reduces IVF live birth rate by 28–35% compared to non-adenomyosis patients (meta-analysis data); higher early pregnancy loss rates; impaired endometrial receptivity the key mechanism
- GnRH agonist pretreatment: 3–6 months GnRH agonist (leuprolide/triptorelin) before IVF suppresses adenomyosis, reduces uterine volume, and significantly improves implantation and live birth rates in adenomyosis patients
- Medical treatment: GnRH agonists, dienogest, progestins, levonorgestrel IUS — all suppress symptoms but not curative; require time off fertility treatment
- Surgery: conservative surgery for focal adenomyoma in selected cases; adenomyomectomy technically difficult — recurrence common; risk of uterine rupture in subsequent pregnancy; only considered if medical treatment failed and IVF outcomes consistently poor
How does Adenomyosis work?
Why does Adenomyosis matter in fertility?
Adenomyosis is frequently under-diagnosed because it requires careful TVS interpretation and is often dismissed as "just a thick uterus." Its impact on IVF outcomes is now well-established — women with adenomyosis have significantly lower implantation and live birth rates per transfer. The most evidence-based intervention before IVF in adenomyosis is prolonged GnRH agonist pretreatment (3–6 months), which suppresses the condition and substantially improves IVF outcomes. Any woman with unexplained implantation failure should have careful TVS and MRI review to exclude adenomyosis.
What are related terms to Adenomyosis?
Endometriosis
Endometriosis is a chronic condition. Tissue similar to the uterine lining grows…
Hysteroscopy
Hysteroscopy is a procedure used to examine the inside of the uterus. A thin, li…
Recurrent Miscarriage
Recurrent Miscarriage means two or more pregnancy losses before 20 weeks. It aff…
IVF (In Vitro Fertilisation)
IVF (In Vitro Fertilisation) is an assisted reproductive technology (ART) in whi…
Embryo Transfer
Embryo Transfer is the final step of the IVF process. A laboratory-cultured embr…
FAQs about Adenomyosis
What is adenomyosis and how does it affect fertility?
Adenomyosis is a condition where endometrial tissue (the uterine lining) grows into the muscular wall of the uterus. It causes the uterus to become enlarged and boggy, with severe period pain, heavy bleeding, and chronic pelvic pain. It impairs fertility by disrupting normal uterine contractions (which may expel embryos), reducing endometrial receptivity, and altering the uterine environment. Studies show adenomyosis reduces IVF live birth rates by 28–35% compared to women without it.
How is adenomyosis diagnosed?
Adenomyosis is diagnosed by transvaginal ultrasound (TVS) or MRI. TVS features of adenomyosis: heterogeneous myometrium, myometrial cysts (small fluid-filled spaces), asymmetric uterine wall thickening, poorly defined endometrial-myometrial junction (junctional zone >12mm), and subendometrial lines and buds. MRI is the gold standard for extent mapping and for differentiating adenomyosis from fibroids. Definitive histological diagnosis requires hysterectomy — but clinical/radiological diagnosis is sufficient to guide treatment.
Can I do IVF with adenomyosis?
Yes — IVF is possible with adenomyosis, but outcomes are significantly better with optimisation beforehand. The most evidence-based pre-IVF intervention is 3–6 months of GnRH agonist treatment (monthly injections that suppress adenomyosis and shrink the uterus). After this course, a freeze-all IVF strategy is used — eggs retrieved and all embryos frozen, then transferred in a subsequent cycle while the uterus is in a suppressed, optimised state. Studies show GnRH agonist pretreatment significantly improves implantation and live birth rates in adenomyosis patients.
Is adenomyosis the same as endometriosis?
No — but they are related. Endometriosis = endometrial-like tissue growing outside the uterus (on ovaries, tubes, peritoneum). Adenomyosis = endometrial tissue growing into the uterine muscle wall. They are different conditions but frequently co-exist (in ~40% of cases). Both cause painful periods and impair fertility, but via different mechanisms. Adenomyosis does not respond to the same surgical treatments as endometriosis — there is no safe, definitive surgical cure for adenomyosis (other than hysterectomy), whereas endometriosis implants and endometriomas can be excised laparoscopically.
Can adenomyosis be cured?
The only definitive cure for adenomyosis is hysterectomy (surgical removal of the uterus). For women who have completed their family, hysterectomy eliminates the condition permanently. For women who wish to conceive, management is medical or conservative surgical: GnRH agonists, progesterone (dienogest, Mirena IUS), or NSAIDs for symptom control — all suppressive, not curative. A focal adenomyoma (discrete nodule) can sometimes be surgically excised (adenomyomectomy), but recurrence is common and there is a risk of uterine rupture in subsequent pregnancy.
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