Myoma

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myoma

[mī′ō·mə]
(medicine)
A benign uterine tumor composed principally of smooth muscle cells.
Any neoplasm originating in muscle.

Myoma

 

a benign tumor of muscle tissue. A myoma that develops from smooth muscle (uterus, intestine, stomach, skin) is called a leiomyoma; a myoma forming from striated skeletal or heart muscle is a rhabdomyoma. Leiomyomas of the stomach and intestine and rhabdomyomas are rare; they are found accidentally during surgery or in autopsies. Besides muscle fibers, a myoma usually contains connective tissue and resembles a fibromyoma.

Myomas (fibromyomas) of the uterus are very common. The tumors are generally multiple and consist of individual nodules of different sizes and shapes. Some tumors weigh several kilograms. Fibromyomas of the uterus result from hormonal disturbances related to ovarian function. They occur most often in women over 30 years of age. Myomas may cause prolonged bleeding, which is followed by anemia and compression of the urinary bladder, blood vessels, and nerves of the minor pelvis. The tumor continues to grow until menstruation ceases, usually when the woman is between the ages of 50 and 55. If a tumor is discovered, the woman should be examined by a physician three or four times a year. Surgery is indicated if the tumor is large or exhibits rapid growth and if the bleeding does not respond to conservative treatment.

REFERENCES

Petchenko, A. I. Fibromiomy matki. Kiev, 1958.
Giliazutdinova, Z. Sh. K patogenezu fibromiomy matki. Kazan, 1967.
Persianinov, L. S. Operativnaia ginekologiia. Moscow, 1971.

L. S. PERSIANINOV

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References in periodicals archive ?
Table 2 shows the rate of pregnancy termination after CM, depending on the main characteristics of myomatous growth.
Trophopathy of myomatous nodes, registered clinically with 6 out of 28 patients, was verified with a histological study in all cases.
At the same time, such factors as the size and number of myomatous nodes, the depth of localization of the tumor in the wall of womb, also its proximity to placenta--all that distinguished the group of the operated females with terminated pregnancy (See Table 2).
Carefully, acutely and bluntly, it was done intracapsular enucleation of myomatous nodes, using bipolar coagulation hemostasis.
Not long ago, in the researches done regarding myomectomy of the deeply located myomatous nodes during pregnancy (Buyanova et al.
Slow reaction to conservative therapy, persistence in carrying out this therapy over a long period of time against the background of rapidly growing myomatous nodes, development of degenerative changes in them, deformations of the uterine cavity, all that significantly discredit the antenatal fetus, often minimizing the perspective of delivery of a healthy child, and more often all that leads to prematurely termination of pregnancy.
Probably, the rate and degree of manifestation of the danger of abortion is influenced by localization, size and number of myomatous nodes in the pregnant womb.
Earlier it was shown the interrelation between localization of the mole inside of the womb (with respect to a big-sized myomatous node) and further course of pregnancy.
According to our observations, the unfavorable outcome of pregnancy was influenced with: the depth of lying, the number and size of myomatous nodes, also the rapid growth of tumor accompanied with trophopathy (see Tables 1, 2).
The method of closure of myomatous node in one layer through applying of interrupted co-opting suture with the use of continuously resolving suture material has proved the development of a full-fledged postoperative scar, which could be seen during subsequent Cesarean section.