群体筛查试验
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Results: Bultrasound screening of all 21 cases showed shrinking mass after intervention therapy, with weakening sign of peripheral blood flow, which were confirmed by pathological test after surgery.
结果：本组患者21例，介入治疗后B超检查妊娠包块缩小，且周围血流信号明显减少或消失，术后得到病理结果证实。
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