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Diagnosis and Treatment of Adenomyosis

Question:

A friend of mine was talking about a myomectomy for adenomyosis. To me, that's just not logical: If they remove part of the uterus in order to remove the adenomyosis, who's to say they got it all? Also, if the uterus no longer functions to have children, what's the point in keeping it? I mean, it doesn't produce hormones...but with doctors in the past doing hysterectomies left and right, is there a valid reason to keep a diseased organ?

Answer:

This is a good example of a situation that can have different correct answers, depending upon the patient's circumstances and personal philosophy. To make the correct decision the patient must have a good understanding of her situation, as well as the pros and cons of the various treatment alternatives. With that in mind, let's start with a few definitions.

The shape of the uterus is similar to an upside-down pear (in this example, the stem would be coming out of the cervix). Most of the uterus is made up of smooth muscle. Its job is to hold the baby during pregnancy, and to push the baby out during delivery. The inside of the uterus is lined by a thin layer of glands called the endometrium, which is similar to the Teflon lining on cookware. During pregnancy the embryo becomes implanted in the endometrium, which provides the necessary nutrients to the developing fetus until the placenta (afterbirth) develops.

In response to estrogen secretion during the first two weeks of the menstrual cycle, the endometrium thickens up. After ovulation, the primary hormone production of the ovaries changes from estrogen to progesterone. Progesterone helps to stabilize the endometrium and ready it for implantation. If pregnancy does not occur, both the estrogen and progesterone production drop, and the endometrium is shed as the woman has her menses. A woman's period is made up of a combination of blood and endometrium.

Endometriosis is a condition in which endometrial tissue grows inside the body but outside of the uterus, probably as a result of menstrual fluid flowing back up through the fallopian tubes during a period and dripping inside the pelvis. Adenomyosis is defined as endometriosis within the muscle wall of the uterus. Adenomyosis is usually not a discrete lesion, but often sends out a diffuse network of branching endometrial glands extending from the endometrium and invading the muscle wall of the uterus. These lesions have no real beginning or end. If a cross-section of a uterus with adenomyosis is examined, one will see varying concentrations of endometriosis within the muscle. An area with a high concentration of adenomyosis and little remaining normal muscle tissue is known as an adenomyoma.

Adenomyoma is entirely different than a fibroid, which is also known as a leiomyoma. This is a smooth muscle tumor occurring in the wall of the uterus. When removed, fibroids have a look similar to a rubber ball. There is a definite beginning and end to a fibroid. The most common symptoms of patients with adenomyosis are painful periods with a very heavy flow, and potentially anemia (low blood-count) as a result.

A normal uterus is fairly hard and firm. A uterus with adenomyosis is usually slightly enlarged, and is soft or squishy to the feel, kind of like a sponge. A careful history and physical exam should raise the possibility of adenomyosis. If the concentration and size of the adenomyosis is large enough, a sonogram (ultrasound) or MRI may be helpful in making the diagnosis. Laparoscopic evaluation may also be helpful in making the diagnosis. When adenomyosis is present, the uterus often looks "sunburned" and blanches like sunburn. However, examination of the surgical specimen (e.g. after a hysterectomy) under a microscope is the only sure method to make an absolute diagnosis of adenomyosis.

The treatment options for adenomyosis are similar to those of endometriosis:

  1. Observation – This is an acceptable option if the symptoms are not severe.

  2. Medical treatment – This includes birth control pills and GnRH agonists, such as Lupron or Synarel. The pills will lighten the period, and thus the symptoms. The GnRH agonists may temporarily alleviate the symptoms and reduce the size of the adenomyosis. But they will not eliminate the adenomyosis, nor will they prevent continued growth once the GnRH is discontinued.

  3. Conservative surgical treatment – This approach is aimed at the preservation of the uterus. It is impossible to remove all of the adenomyosis and still preserve the uterus. The removal of fibroids (a different condition from adenomyosis) and the reconstruction of the uterus during a myomectomy will be successful, because fibroids are discrete lesions that can be completely removed. But tiny microscopic fibroid "seedlets" can remain; this is one reason fibroids can recur after a myomectomy. If fibroids do recur after a myomectomy, it is usually many years later.

    In contrast to fibroids, attempts to remove the disease (adenomyosis) and save the uterus are not as practical or successful. Adenomyosis is so diffuse that an adenomyomectomy (removal of the adenomyosis with reconstruction of the uterus) will reduce the amount of adenomyosis, but due to the nature of the lesion, a significant amount of disease usually remains in the uterus. Chances are, the patient who has this procedure will need to undergo additional surgery within a couple of years. If a woman who trying to get pregnant, or is in the rare situation of having a single, well-defined adenomyoma, she may be a candidate for this type of conservative surgical treatment. This approach may also be an acceptable option for a woman who philosophically does not want a hysterectomy, and does not mind undergoing repeated surgeries to maintain what is admittedly a diseased organ.

  4. Definitive surgical treatment with hysterectomy – This is the only option to truly remove or cure the patient of adenomyosis. A patient with adenomyosis can also have endometriosis. If endometriosis is present, it should be treated prior to actually removing the uterus so that the endometriosis is not buried during the hysterectomy. Having a hysterectomy is never a decision that should be taken lightly. Too many hysterectomies have been performed in the past. But others' wrongs should not influence or prevent you from doing what is right for you. Adenomyosis is a medical condition that, if you are symptomatic, will usually require the removal of the diseased organ (hysterectomy) to obtain relief from the symptoms, while avoiding the real possibility of repetitive surgeries.

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