Instead of intrauterine injection of normal saline through a catheter, vaginal ultrasonography immediately after hysteroscopic examination is performed .Due to the retained irrigating fluid, the fibroid can be watched clearly. The size of the fibroid and the serosa myoma thickness can be estimated. This phenomenon is a large, broad based submucous fibroid is pushed back into the muscle layer by increased intrauterine pressure.Very often the patient received GnRH agonist treatment.Hysteroscopic myomectomy may become difficult or even impossible.
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