How should symptomatic adenomyosis be managed in a reproductive‑age woman?

Management of Symptomatic Adenomyosis in Reproductive-Age Women

For reproductive-age women with symptomatic adenomyosis who do not desire future fertility, medical management should be trialed first, followed by uterine artery embolization (UAE) as the preferred minimally invasive option, reserving hysterectomy only when less invasive approaches fail. 1

Initial Treatment Approach

Medical Management (First-Line)

Medical therapy should be attempted before pursuing invasive interventions 1. Options include:

• Levonorgestrel intrauterine system (LNG-IUS) - particularly effective for heavy menstrual bleeding
• Dienogest - targets both bleeding and pain symptoms
• Combined oral contraceptives
• GnRH antagonists - for short-term symptom control, though long-term use is limited by side effects
• NSAIDs and tranexamic acid - for symptomatic relief

The choice among these depends on whether bleeding or pain predominates, and whether concurrent endometriosis or fibroids exist 2.

When Medical Management Fails

Uterine Artery Embolization (Preferred Minimally Invasive Option)

UAE should be considered the primary interventional treatment for symptomatic adenomyosis when medical therapy is inadequate 3, 1. The evidence supporting this recommendation:

• Symptom control: 73-88% of patients maintain symptomatic relief at median follow-up of 24-65 months 3
• Long-term durability: 65-82% achieve long-term symptomatic relief (median 27.9 months) 3
• Complete necrosis: 83% demonstrate complete adenomyosis necrosis with significant symptom improvement 3

Critical caveat: Early recurrence rates at 2 years were 40-50% in older studies 3, but more recent data show improved durability with modern techniques 3.

Important Considerations for UAE

UAE is particularly appropriate when:

• Adenomyosis coexists with uterine fibroids (common scenario) 3, 1
• Patient wishes to avoid major surgery
• Medical management has failed or is contraindicated

Note: While pregnancy is possible after UAE, patients should be counseled that this is not the optimal fertility-preserving approach 1.

Surgical Options

Hysterectomy (Definitive but Last Resort)

Hysterectomy should be avoided if less invasive procedures are available 1, given significant long-term risks:

• Increased cardiovascular disease risk 1
• Elevated risk of osteoporosis and bone fractures 1
• Increased dementia risk 1
• Higher mortality when performed at young age 1
• Mood disorders even with ovarian preservation 1

Hysterectomy is appropriate when:

• Multiple treatment failures have occurred
• Concurrent pathology requires definitive treatment (high-grade dysplasia, prolapse, malignancy concern)
• Patient has completed childbearing and desires definitive resolution

If hysterectomy is performed, use the least invasive route (vaginal > laparoscopic > abdominal) 1.

Conservative Surgery (Adenomyomectomy)

Conservative surgical excision may be considered for:

• Focal adenomyomas (not diffuse disease)
• Patients refractory to medical management who desire fertility preservation
• Symptom relief: >75% experience improvement 4
• Major limitation: High technical complexity requiring experienced surgeons in specialized centers 5, 4

Emerging Options

High-Intensity Focused Ultrasound (HIFU/MRgFUS)

MR-guided focused ultrasound shows promise for:

• Localized adenomyosis lesions
• Patients desiring uterus preservation
• Limitation: Efficacy in diffuse adenomyosis remains inconsistent 6, 7

Treatment Algorithm Based on Fertility Desires

No Desire for Future Fertility:

1. Trial medical management (LNG-IUS, dienogest, or combined OCPs)
2. If medical failure → UAE (preferred minimally invasive option)
3. If UAE fails or contraindicated → Hysterectomy (least invasive route)

Fertility Preservation Desired:

1. Medical management with time-limited interventions
2. Consider MRgFUS for focal lesions
3. Adenomyomectomy only at specialized centers for focal disease
4. Avoid UAE as first-line (pregnancy possible but not optimal)

Common Pitfalls to Avoid

• Endometrial ablation has high failure rates in the presence of adenomyosis 1 - avoid this approach
• Do not perform hysterectomy without trialing less invasive options given the significant long-term morbidity 1
• Age matters: Women <40 years have higher treatment failure rates with UAE due to collateral vessel recruitment 3
• Concurrent endometriosis: If present, surgical approaches may be more appropriate as they can address both conditions simultaneously 3

Key Imaging Considerations

MRI is superior to ultrasound for:

• Confirming adenomyosis diagnosis
• Distinguishing focal vs. diffuse disease
• Planning interventional procedures
• Predicting treatment outcomes 6, 8

The most recent 2024 ACR guidelines clearly establish that medical management followed by UAE represents the standard approach for reproductive-age women with symptomatic adenomyosis who do not desire pregnancy, with hysterectomy reserved as a last resort due to its significant long-term health risks 1.