患者,女,53岁,因下腹坠胀,尿频尿急,解水样大便就诊。超声检查示:子宫大小、形态正常,肌壁回声均质,内膜回声居中,于盆腔区(相当于阴道及宫颈后方)见一大小约6.6cm×3.2cm的囊实混合性包块(图1),其内以实性回声为主,形态较规则,边界清,包膜尚光整,内部呈均匀的中低回声,其周见? The patient, female, was 53 years old. He had diarrhea in the lower abdomen, had frequent micturition, and had urinary urgency. Ultrasound examination showed that the size and shape of the uterus was normal, the echo of the muscular wall was homogenous, and the echo of the intima was centered. In the pelvic region (equivalent to the posterior of the vagina and the cervix), a cystic solid mass of about 6.6 cm x 3.2 cm was seen (Figure 1), which is dominated by solid echoes, with a more regular shape, clear borders, and a well-defined envelope, with a uniform middle-low echo, and its weekdays?