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Twin reversed arterial perfusion sequence (TRAPS) is a rare and severe complication of monochorionic twin pregnancies, due to abnormal placental-fetal vascular anastomosis, which is characterized by absence of heart or loss of normal cardiac structure in one twin. We reported a case of triplet pregnancy complicated by TRAPS after assisted reproductive technology. Two cleavage-stage frozen embryos were transferred, one of which developed into monochorionic twin pregnology. The TRAPS was diagnosed by ultrasound at 8 +5 weeks. However, due to personal factors, the patient did not intervene in a timely manner and the pump twin died. Another single fetus developed normally until full term delivery. If the treatment is needed, as for the technique of choice to interrupt the vascular supply to the acardiac twin, the radiofrequency ablation of the intrafetal vessel is usually the preferred approach. However, the best timing of intervention is still debated. [ABSTRACT FROM AUTHOR]

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Objective To analyze the image features of shear wave elastrography (SWE) in breast masses, and to evaluate their values in the differentiation of benign and malignant breast lesions. Methods A total of 361 patients with 403 breast lesions who simultaneously underwent conventional ultrasound and SWE examination from February 2015 to January 2018 were selected. Diagnosis in all patients was confirmed by aspiration biopsy or operative pathology. The SWE images were collected and the elastic images were divided into 5 types. The SWE image features of different breast pathological types were summarized, and their values in benign and malignant breast lesion diagnoses were evaluated. Results The main features of benign breast lesion were type I and II, the main features of the malignant lesion were type IV and V, and the proportion of which were 43.6% (71/163), 37.4% (61/163), 22.1% (53/240) and 57.9% (139/240), respectively. Type III accounted for a certain proportion in both benign and malignant lesions. The SWE image features of benign and malignant lesions were compared and a significant difference was observed (P<0.001). The type V features were mainly observed in invasive ductal carcinoma, invasive lobular carcinoma and other types of invasive carcinoma, while the type IV features were mostly presented in ductal carcinoma in situ and mucinous carcinoma. Fibroadenoma, fibroadenosis accompanied with fibroadenoma, and fibroadenosis were featured with type I. Both intraductal papilloma and benign phyllodes tumor were mostly type II, while type III and V were more common in chronic granulomatous mastitis. When type I and typeIIof breast lesions were classified as benign features while type IV and V were malignant features, the sensitivity and specificity of breast malignant lesion diagnosis were 91.2% and 84.7% by application of SWE combined with breast imaging reporting and data system (BI-RADS). The sensitivity of combined diagnosis was slightly lower than that of conventional ultrasound (P>0.05), but the specificity was significantly higher than conventional ultrasound (P<0.01). Conclusion The SWE is a simple and effective method. Combination of SWE with conventional ultrasound may improve the diagnostic differentiation of benign and malignant breast lesions. [ABSTRACT FROM AUTHOR]

Copyright of Nanning Zhiye Jishu Xueyuan Xuebao is the property of Nanning College for Vocational Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)