経膣超音波穿刺システムを用いたtranscervical microwave myolysis

抄録

Transcervical microwave myolysis assisted by transvaginal ultrasonic guidance for myomas was developed. Using the system, a feasibility study of microwave myolysis was performed. After completion of microwave endometrial ablation for menorrhagia, a 14 gauge guiding needle was transcervically introduced to the uterine cavity and inserted into the myoma tissue under ultrasonography using a transvaginal probe with a puncture attachment. An inner needle of the guiding needle was replaced by a microwave applicator 1.6 mm in diameter. Three submucous myoma nodes 5-7 cm in size were irradiated by microwaves at 2.45 GHz. Main part of the nodes became avascular in Gd-enhanced MRI after one month. Usual myoma nodes shrank by 44-53% at three months that followed. No severe complications were encountered during and after the operation. Ultrasonically guided microwave myolysis is feasible and a promising treatment.