Uterine myomas, or fibroids, are the most common solid pelvic tumors in women during their reproductive years. They develop in 20-25% of women and are related to estrogen levels. Myomas can be classified based on their location and relation to the uterine muscle. Common symptoms include menorrhagia and pelvic pressure. Treatment options include observation for small asymptomatic fibroids, medical treatment to induce a pseudo-menopausal state, and surgical options like myomectomy or hysterectomy depending on factors like symptoms and desire to preserve fertility.
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Gross Appearance
Rare only a single £¬ usually many exist
Well-circumscribed £¬ nonencapsulated
A pseudocapsule is present.
The consistency is usually firm or even hard
except when degeneration or hemorrhage has
occurred.
color £º light gray or pinkish white
cut section £º an intertwining pattern or
a whorl-like arrangement £»
bulgy
pseudocapsule
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Smooth muscle tumors of the uterus are often
multiple. Seen here are submucosal, intramural,
and subserosal leiomyomata of the uterus.
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Microscopic Appearance
Composition £º smooth muscle
connective tissue
The nonstriated muscle fibers are arranged
in bundles of various sizes that run in
multiple directions.
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Degeneration
Hyaline degeneration
Cystic degeneration
Red degeneration
Sarcomatous change
The others £º fat degeneration
calcification
the secondary infection
Result from the diminished
vascularity of the
connective-tissue element
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Here is a very large
leiomyoma of the uterus
that has undergone
degenerative change and is
red (so-called "red
degeneration"). Such an
appearance might make
you think that it could be
malignant. Remember that
malignant tumors do not
generally arise from benign
tumors.
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Sarcomatous Change
Rare £º 0.4% ¡« 0.8%
More common at 40 ¡« 50 years old
Usually occur in intramural fiboids
grow quickly
vaginal bleeding
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Critical Points
May be related to superabundant estrogen.
Well-circumscribed £¬ nonencapsulated.
Have a pseudocapsule.
Can be classified into submucosal ¡¢ intramural
and subserosal types.
Different types have different features.
Menorrhagia is common.
Four degeneration types
Individualized treatment £¬ include observation ¡¢
medical treatment and surgical treatment.