Over half of all women get this

Myomas often give few or no symptoms

Muscle nodules

Muscle nodules are nodules that occur in the uterus muscular layer. It can cause abnormal bleeding, problems with getting pregnant and complications during pregnancy and childbirth.

It is estimated that over half of women over 40 years have muscle nodules, but most have no symptoms, and the nodes will only be detected randomly by a vascular examination. At menopause, muscular nodules are found in about 70 percent of the women.

Muscle nodules shrink and disappear after menopause.

Source: The heelseksikon. no

Muscle nodules, or myomas, are benign tumors that result from the smooth muscle of the uterus.

– Growth of the nodes depends, among other things, on the woman’s own production of hormones in the ovaries, says Kirsten Hald. She is a senior doctor at the gynecological department of Ullevål, Oslo University Hospital.

The womb consists of long muscle fibers. These fibers cause the uterus to drain on menstruation and it is those who push the child out when it is time for birth.

– These muscles can wake up to nests or bullets, and are called myths, says Professor emerita and gynecologist at NTNU, Mette Haase Moen.

Very common

– In about 70 percent of women in our part of the world, such knots are formed in the womb during life, but only about 15-30 percent get bothered by them, “says Hald..

The risk of developing myomas increases with age until menopause.

– In the forties, myomas contain more than 50 percent of all women, says Haase Moen.

Some knots are so small that they can only be detected by microscopy, others may be big like soccer or watermelons.

– Those who have not been pregnant or who have children late have a greater tendency to develop myomies in the uterus compared to those who have more children and who have children early, says Hald.

Overweight also seems to increase the risk, Hald says. Many births and birth control, on the other hand, can reduce the risk, says Haase Moen.

Some women are also hereditary, especially women of African origin, informs Haase Moen.

Women of African origin generally get older, more and more muscle nodules than women from Europe and the United States, “says Hald.

Frequently no symptoms

Most women do not experience symptoms associated with muscle nodes, but there are exceptions.

Over half of all women get this

Women do not notice the disease as men do

– If you experience symptoms associated with myomas, it is most common to get more powerful menstrual bleeding. Some may also bleed so heavily that they become anemia, says Hald.

If the myoms become large enough, they may cause pressure pains; This is most often seen by pressure on the bladder as it lies directly in front of the uterus in the pelvis.

– You notice that urinating frequently. Typically, you have to go up several times during the night to go to the bathroom, says Hald.

– In some cases you may also feel pressure in the stomach and sometimes the muscles in the womb may grow so large that you can see that your stomach bumps out as if you are pregnant, adds Hald to.

Never malicious

Muscle joints in the uterus will never be malignant; that is, they do not develop into cancer.

– They are not life threatening, but can grow and cause increasing ailments. After menopause, the myoms shrink and gradually lose blood flow. The knots and any symptoms will disappear, says Hald.

In most women with muscle nodules in the uterus, these will not affect pregnancy or birth.

– Depending on the location, but also the number and size, some myomes can make it more difficult to get pregnant, and increase the risk of spontaneous abortion and early birth, says Hald.

Myoms and pregnancies

– If the muscle joint is located inside the cervix, it may adversely affect fertility. It can increase the risk of abortion, “says Haase Moen.

These are abnormal bleeding

There are different types of menstrual disorders with different patterns, causes and treatments:

  • Menorrhagia: Normal cycle bleeding but very high bleeding (more than eight days or more than 80 milliliters per day).
  • Metroragi: Bleeding without normal cycle and of different duration.
  • Meno Metroragy: Bleeding that is both very abundant and without regular cycle.
  • Intermenstrual Bleeding: Bleeding that occurs in addition to regular menstrual periods.
  • Breakthrough bleeding: Bleeding that occurs unexpectedly during hormone treatment (using a pill or HRT in menopause).
  • Postmenopausal bleeding bleeding: Bleeding more than 12 months after menopause (last menstrual period).

Source: The heelseksikon. no

In general, muscle nodules can cause problems in pregnancy with the solution of the placenta, abnormal leaning of the fetus and sometimes it may block the birthway so it may be taken cesarean section. There is a risk of major bleeding after birth, Haase Moen adds.

Different treatment methods

Women who do not have a myomy plague should not normally be treated. But for those who experience symptoms, there are many kinds of treatments.

– Selection of treatment depends on many factors. The most important is the age of the woman, wishes for children or possibly more children, degree, type of symptoms and her own desire, says Hald.

It is best to start with medical treatment. These can be tablets with or without hormones, or, for example, hormone spiral if the woman experiences severe bleeding.

Recent methods have also been developed to reduce size and stop the development of muscle nodules.

– Of these, so-called “embolization” is the most widely used and most widely tested in both Norway and abroad. It is about stopping the blood supply of the myoms by using small particles injected into the womb via blood vessels. This treatment is given in most good and lasting results, especially when it comes to bleeding disorders, Hald says.

If the woman wishes to become pregnant now or in the future, the doctor may in some cases only remove the muscle joints.

– If it does not help or is enough, you must be treated with surgery. The most common procedure that is done is hysterectomy, ie removal of the uterus, says Hald.


40 percent of all hysterectomies performed, both in Norway and the rest of the world, are due to myomerism.

Over half of all women get this

The condition may cause you to not have children

– This procedure may, if the uterus is not too big, today is usually done by peephole surgery. Then the sick leave period is usually only a couple of weeks, says Hald.

In the case of hysterectomy, the ovaries are not removed if they are normal.

– This means that the woman still has its normal hormone production, as these are produced in the ovaries and not in the uterus. Many think that you get into menopause by removing the uterus, but that’s not the case, says Hald.

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