Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
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Ultrasound Obstet Gynecol · Feb 2011
Multicenter StudyEffect of cancer prevalence on the use of risk-assessment cut-off levels and the performance of mathematical models to distinguish malignant from benign adnexal masses.
Two logistic regression models have been developed for the characterization of adnexal masses. The goal of this prospective analysis was to see whether these models perform differently according to the prevalence of malignancy and whether the cut-off levels of risk assessment for malignancy by the models require modification in different centers. ⋯ Overall the models performed well in all centers. The performance of the logistic regression models worsened with increasing prevalence of malignancy, due to a case mix with more borderline and complex benign masses seen in those centers. Because the cut-off of 0.10 is optimal for all three types of center, it seems reasonable to use this cut-off for both models in all centers.
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Ultrasound Obstet Gynecol · Aug 2010
Case ReportsFlorid polypoid endometriosis of the cervix with left ureteric obstruction: a mimic of cervical malignancy.
Polypoid endometriosis, in contrast to typical (non-polypoid) endometriosis, presents as masses that project from a serosal or mucosal surface or from the lining of an endometriotic cyst. Generally large, these masses can simulate a malignant tumor on imaging and at surgery. We report a case of florid polypoid endometriosis arising from the cervix with extension into the left parametrium and involving the left ureter, mimicking a locally advanced cervical malignancy on ultrasound and magnetic resonance imaging.
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Ultrasound Obstet Gynecol · Jul 2010
Comparative StudySelective reduction in complicated monochorionic pregnancies: radiofrequency ablation vs. bipolar cord coagulation.
To compare radiofrequency ablation (RFA) and bipolar cord coagulation (BPC) methods for selective fetal reduction in the treatment of complicated monochorionic (MC) multifetal gestations. ⋯ Overall fetal survival rate following selective reduction in complicated MC pregnancies is similar whether reduction is performed by RFA or BPC. Fewer additional intraoperative procedures are required for RFA than for BPC. The possibility that RFA is associated with a lower rate of postoperative PPROM than is BPC will have to be confirmed in larger series.
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Ultrasound Obstet Gynecol · May 2010
Reference values for variables of fetal cardiocirculatory dynamics at 11-14 weeks of gestation.
Despite the increasing popularity of first-trimester fetal echocardiography, the evaluation of fetal heart function during this period remains challenging. The parameters of normal cardiac function at 11-14 weeks' gestation are not well defined and appropriate reference values have not yet been established. The purpose of this study was to evaluate the fetal cardiocirculatory dynamics during routine first-trimester screening and establish cross-sectional reference ranges for 11-14 weeks' gestation. ⋯ We have established reference ranges for the noninvasive evaluation of fetal cardiocirculatory dynamics at 11-14 weeks' gestation.