患者女,31岁。间歇性尿频2个月,无尿急、尿痛及血尿,时有下腹坠胀感。曾三次查尿常规,均正常。B超检查:双肾、膀胱正常,双输尿管无扩张,于耻骨联合上方行纵横断面扫查,均可见尿道内一圆形强光团,大小为5mm×5mm,后方伴声影,不随体位而移动,距尿道内口约8mm(图1)。保守治疗一周 Female patient, 31 years old. Intermittent urinary frequency 2 months, no urgency, dysuria and hematuria, when the lower abdomen bulge. Urine routine examination three times, are normal. B ultrasound examination: the kidneys, normal bladder, ureter without expansion, supra pubic symphysis above the vertical and horizontal cross-sectional scan can be seen a circular urethra light group, the size of 5mm × 5mm, with sound shadow behind, with the body position Move, about 8 mm from the urethra (Figure 1). Conservative treatment for a week