Adenomyosis

Symptoms

• Heavy menstrual bleeding (menorrhagia), which means periods that are unusually long or heavy.
• Severe menstrual cramps (dysmenorrhea), often described as sharp or knife-like pelvic pain during your period.
• Chronic pelvic pain, which is pain in the pelvic region that occurs outside of your menstrual cycle.
• An enlarged uterus, which can lead to feelings of abdominal pressure or bloating.
• Pain during sexual intercourse (dyspareunia).
• Difficulty getting pregnant or maintaining a pregnancy (infertility or subfertility).
• Pain that spreads to your back or thighs.
• Some women with adenomyosis experience no symptoms at all, and the condition may be discovered incidentally.
• In rare cases, severe anemia due to excessive blood loss can cause extreme fatigue, dizziness, shortness of breath, or fainting.
• Sudden, severe pelvic pain, though not typical, could indicate a coexisting condition or complication and warrants medical attention.

Causes & Risk Factors

• The exact cause of adenomyosis is not fully understood. However, current theories suggest it is an estrogen-dependent condition, meaning its growth and symptoms are influenced by the hormone estrogen. This is why symptoms often improve after menopause.
• Several theories explain how adenomyosis might develop:
• Invasive Growth Theory: This suggests that cells from the uterine lining directly invade the muscular wall. This might be triggered by micro-trauma to the uterus, possibly during childbirth or uterine surgeries.
• Metaplasia Theory: This theory proposes that misplaced embryonic cells develop into endometrial tissue within the uterine muscle.
• Stem Cell Theory: This idea suggests that stem cells from the bone marrow might travel to the uterus and transform into endometrial tissue within the myometrium.
• Having had multiple pregnancies (multiparity).
• Previous uterine surgery, such as a Cesarean section, dilation and curettage (D&C), or myomectomy (fibroid removal). These procedures can breach the barrier between the uterine lining and muscle.
• Being in your late reproductive years, typically women in their 40s and 50s.
• Starting menstruation at an early age (before age 10).
• Having short menstrual cycles (shorter than 24 days).
• Use of tamoxifen, a medication for breast cancer.
• Some studies suggest a possible link with depression and antidepressant use, though this connection is not yet fully established.
• There are no definitively established protective factors.

Diagnosis

• Medical History: Your doctor will ask about your menstrual cycles (length, duration, bleeding volume), pain characteristics (when it occurs, how severe), and any previous pregnancies or uterine surgeries.
• Physical Examination: A bimanual pelvic exam may reveal a uterus that feels symmetrically enlarged, soft, and tender.
• Transvaginal Ultrasound (TVUS): This is often the first imaging test. It uses sound waves to create images of your uterus and can show signs like asymmetric thickening of the uterine muscle, small cysts, or an irregular junctional zone (the area between the uterine lining and muscle).
• Magnetic Resonance Imaging (MRI): An MRI may be used if ultrasound results are unclear or for surgical planning. It can provide more detailed images, often showing a thickened junctional zone (typically 12 mm or more).
• Laboratory Tests: A complete blood count (CBC) may be done to check for anemia, which can result from heavy menstrual bleeding. There is no specific blood test for adenomyosis.
• Definitive Diagnosis: The only way to definitively diagnose adenomyosis is through a histopathological examination of uterine tissue after a hysterectomy (surgical removal of the uterus). However, a diagnosis is often made based on symptoms and imaging findings without surgery.

Treatment Options

• Watchful Waiting: For women with mild or no symptoms, especially those nearing menopause, a "wait and see" approach may be recommended.
• Nonsteroidal Anti-inflammatory Drugs (NSAIDs): Medications like ibuprofen or naproxen can help manage menstrual pain.
• Tranexamic Acid: This medication can reduce heavy menstrual bleeding.
• Levonorgestrel-releasing Intrauterine System (LNG-IUS): Often a first-line hormonal treatment, this IUD releases progestin to reduce bleeding and pain and can be effective for several years.
• Combined Oral Contraceptives (COCs): Birth control pills can help reduce bleeding and pain by regulating hormones and thinning the uterine lining.
• Progestin-only Therapies: These can be taken orally, as an injection, or as an implant, and work by thinning the uterine lining.
• Gonadotropin-releasing Hormone (GnRH) Agonists/Antagonists: These medications temporarily induce a "medical menopause" to reduce estrogen levels, which can significantly reduce symptoms. Their use is typically limited due to potential side effects like bone density loss.
• Adenomyomectomy: A uterine-sparing surgery to remove a focal area of adenomyosis (an adenomyoma). This is technically challenging and may have a high recurrence rate.
• Uterine Artery Embolization (UAE): A minimally invasive procedure that blocks blood supply to the uterus, causing adenomyotic tissue to shrink.
• High-Intensity Focused Ultrasound (HIFU): A non-invasive procedure that uses focused ultrasound waves to destroy adenomyotic tissue.
• Hysterectomy: The surgical removal of the uterus is the only definitive cure for adenomyosis. The ovaries may be conserved depending on your age and other health factors.

Frequently Asked Questions