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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Apropos of 7 cases of myoma that appeared while under anti-estrogen treatment.
Before recruitment, all women underwent a transvaginal ultrasound, or transabdominal ultrasound, to confirm the type of myoma and the shape of the uterine cavity.
Uterine myomas cause heavy menstrual bleeding and other clinically significant symptoms in 35%-50% of affected women and have been shown to be the leading indication for hysterectomy in the United States among women aged 35-54 years.
Its use as a treatment option of myoma was first described by Murphy et al in 1993.
In another study carried out on19 patients with myoma uteri at the end of the one year application hemoglobin value had increased from 11.
Three categories of interventions can be identified (a) interventions on uterine arteries such as laparoscopic uterine artery ligation, uterine artery embolization, pericervical mechanical tourniquet for uterine arteries and hormonal tourniquets such as vasopressin; (b) uterotonics such as ergometrine, oxytocin, misoprostol and sulprostone and (c) myoma dissection techniques which include the use of laser, electrosurgery and chemical dissectors such as sodium-2-mercaptoethanesulfonate (Mesna) (5-10).
After reducing the blood flow, the capsule of the myoma was incised and dissected using dissectors and scissors.
Each myoma was stained with Masson's trichrome so that the myoma cell cytoplasm and nucleus could be easily differentiated from the intervening fibrovascular stroma.
The aim of the projects is to comprehensively characterize crc and myoma molecular genetic profiles.
There was also the case of Susan, who had a myoma as big as her fist.
The prevalence of these complications is increased if there are multiple masses, if a myoma is intramural and retro placental and if a myoma is larger than 3.