**Core Concept**
Adenomyosis is a gynecological condition characterized by the presence of ectopic endometrial tissue within the myometrium, leading to uterine enlargement, dysmenorrhea, and heavy menstrual bleeding. The treatment of choice involves addressing the hormonal and anatomical aspects of the condition.

**Why the Correct Answer is Right**
The treatment of choice for adenomyosis is typically surgical or medical management aimed at reducing symptoms and improving quality of life. **Hysterectomy**, which involves the removal of the uterus, is often considered the definitive treatment for adenomyosis, especially in cases of severe symptoms or large uterine size. This approach eliminates the site of ectopic endometrial tissue and provides long-term relief from symptoms.

**Why Each Wrong Option is Incorrect**
* **Option A:** **Uterine artery embolization** may be considered for adenomyosis, but it is not the treatment of choice due to variable success rates and potential complications.
* **Option B:** **Hormonal therapy**, such as gonadotropin-releasing hormone (GnRH) agonists or progestins, may provide temporary relief from symptoms but does not address the underlying ectopic endometrial tissue and is not a definitive treatment.
* **Option C:** **Myomectomy**, which involves the removal of uterine fibroids, may be performed in some cases of adenomyosis but is not the preferred treatment due to the diffuse nature of the condition.

**Clinical Pearl / High-Yield Fact**
A key aspect to remember is that adenomyosis is often diagnosed in women of reproductive age, and treatment decisions should take into account the patient's desire for future fertility.

**Correct Answer: C. Hysterectomy**