Page 54 - SONO 260 THE FIRST TRIMESTER
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                                   žFibroids are stimulated by estrogen and can consequently experience rapid growth during pregnancy, though this does not always occur.
žThe most common sonographic appearance of a fibroid is that of a solid, hypoechoic, myometrial mass.
žFibroids must be differentiated from focal myometrial contraction, which are smooth muscle contraction that can be noted on an ultrasound examination.
ž Fibroids will consistently alter the shape of the myometrium, while true myometrial contractions
typically disappear within 20-30 minutes.
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