目的 探讨B超与MRI、宫腔镜联合诊断对宫腔占位性病变的临床意义。方法 选择2017年1月1日— 12月31日我院收治的108例疑似宫腔占位性病变患者为研究对象。所有患者均于宫腔操作前行阴道彩色多普勒超声(以下简称B超)检查、MRI检查及宫腔镜检查。与病理检查结果对比,分别分析其灵敏度、特异度。结果 108例患者中宫腔无病理变化者27例,子宫内膜息肉39例,子宫内膜增生27例,子宫黏膜下肌瘤10例,子宫内膜癌5例。B超、MRI、宫腔镜诊断灵敏度分别为72.84%、71.60%、75.31%,特异度分别为62.96%、85.19%、66.67%。B超+MRI诊断子宫黏膜下肌瘤和子宫内膜癌灵敏度100%,特异度分别为87.76%和99.03%。B超+MRI+宫腔镜诊断子宫内膜增生、子宫黏膜下肌瘤、子宫内膜癌灵敏度均为100%。结论 宫腔占位病变以良性病变居多,B超联合宫腔镜和MRI检查可提高诊断率。对子宫内膜癌高危人群应进行B超与MRI联合检查,宫腔镜定位活检仅在必要时实施。

Objective To explore the clinical significance of B-ultrasound, MRI and hysteroscopy in the diagnosis of uterine space occupying lesions. Methods 108 patients with suspected uterine space occupying lesions admitted to our hospital from January 1 to December 31 2017 were selected as the study objects. All patients were examined by vaginal color Doppler ultrasound, MRI and hysteroscopy before uterine operation. Compared with the results of pathological examination, the sensitivity and specificity were analyzed. Results Among the 108 patients, 27 had no pathological changes in uterine cavity, 39 had endometrial polyps, 27 had endometrial hyperplasia, 10 had submucous myoma, and 5 had endometrial cancer. The sensitivity of B-ultrasound, MRI and hysteroscopy were 72.84%, 71.60% and 75.31% respectively, and the specificity were 62.96%, 85.19% and 66.67% respectively. The sensitivity of B-ultrasound+MRI in the diagnosis of submucous myoma and endometrial carcinoma was 100% and the specificity was 87.76% and 99.03%, respectively. The sensitivity of B-ultrasound+MRI+hysteroscopy in the diagnosis of endometrial hyperplasia, submucous myoma and endometrial carcinoma was 100%. Conclusion Most of the uterine space occupying lesions are benign. B-ultrasound combined with hysteroscopy and MRI may improve the diagnosis rate. The high-risk group of endometrial cancer should be examined by B-ultrasound and MRI, and hysteroscopic biopsy would be performed only when necessary.

目的 构建吉西他滨耐药乳腺癌细胞4T1耐药株并建立裸鼠乳腺癌肝转移模型。方法 采用低浓度加量持续诱导法,诱导吉西他滨耐药乳腺癌细胞4T1耐药株,命名为4T1/Gem;CCK-8法测定4T1与4T1/Gem细胞的增殖抑制率,计算耐药指数; Western blot法检测细胞P-gp蛋白表达;B超引导下注射4T1/Gem细胞悬液诱导裸鼠肝脏成瘤;HE染色观察肿瘤组织病理情况,免疫组化法检测瘤组织ER、PR、HER2、Ki-67和P-gp蛋白的表达。结果 经过14个月的诱导成功建立4T1/Gem细胞株,可在含40 μg/mL的Gem培养液中稳定生长。4T1/Gem细胞耐药指数为4T1细胞的788.547倍。与亲代相比,4T1/Gem处于G1期和G2期的细胞增加,S期细胞减少;上调P-gp蛋白的表达。4T1/Gem细胞成功建立裸鼠乳腺癌肝转移模型,瘤组织中ER、PR、HER2蛋白阴性表达,Ki-67阳性10％和P-gp蛋白阳性表达。结论 成功构建吉西他滨耐药乳腺癌细胞4T1耐药株并建立裸鼠乳腺癌肝转移模型,为开发治疗乳腺癌肝转移化疗耐药的药物提供实验基础。

Objective To construct a gemcitabine-resistant variant of the breast cancer cell line (4T1/Gem) and establish a nude mouse model of breast cancer with hepatic metastatic. Methods A gemcitabine-resistant variant of the breast cancer 4T1 cell line was induced by gradually increasing the concentration of gemcitabine; this variant is referred to in this study as 4T1/Gem. The proliferation suppression rates of 4T1 and 4T1/Gem cells were determined by using the CCK-8 essay to evaluate the drug resistance indices of the cell lines. Western blot analysis was used to detect P-gp protein expression. Under ultrasonography, a 4T1/Gem cell suspension was injected into nude mice to induce liver tumors. H&E staining was used to observe tumor pathology, and immunohistochemistry was used to detect the expression of ER, PR, HER-2, Ki-67, and P-gp. Results After 14 months of induction, a 4T1/Gem cell line is established successfully. The cell line can grow stably in culture liquid containing 40 μg/ml gemcitabine. The drug resistance index of 4T1/Gem is 788.547. Compared with the 4T1 cell line, the 4T1/Gem cell line can upregulate P-gp protein expression and successfully establish a nude mouse model of breast cancer with hepatic metastatic. ER, PR, and HER-2 proteins exhibit negative expression in the tumor tissue. The positive expression of P-gp and 10% of Ki-67 proteins is also observed. Conclusion This study successfully constructs a gemcitabine-resistant variant of the breast cancer cell line (4T1/Gem)and establishes a nude mouse model of breast cancer with hepatic metastatic, thereby providing an experimental basis for developing and treating a drug-resistant variant of breast cancer.

目的 通过B超检查,掌握九龙镇农村已婚育龄妇女常见病的患病情况,总结和分析B超在普查中的应用价值。方法 对自愿参加普查的2775名20~59岁九龙镇育龄妇女进行子宫、附件的常规B超检查,对检出的妇科疾病进行统计分析。结果 在普查中检出多种妇科疾病,前三位的是子宫肌瘤、宫颈囊肿及附件包块;年龄段分布情况中,40~49岁居首位、30~39岁次之。结论 定期对农村育龄妇女进行B超普查是早期发现、早期诊断妇科病最简便、最有效的检查方法,在临床中具有重要的应用价值。