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  • Title: Accuracy of transvaginal ultrasound for diagnosis of deep endometriosis in the rectosigmoid: systematic review and meta-analysis.
    Author: Guerriero S, Ajossa S, Orozco R, Perniciano M, Jurado M, Melis GB, Alcazar JL.
    Journal: Ultrasound Obstet Gynecol; 2016 Mar; 47(3):281-9. PubMed ID: 26213903.
    Abstract:
    OBJECTIVES: To review the diagnostic accuracy of transvaginal ultrasound (TVS) in the preoperative detection of rectosigmoid endometriosis in patients with clinical suspicion of deep infiltrating endometriosis (DIE), comparing enhanced (E-TVS) and non-enhanced approaches. METHODS: An extensive search was performed in MEDLINE (PubMed) and EMBASE for studies published between January 1989 and December 2014. The eligibility criterion was use of TVS for preoperative detection of rectosigmoid endometriosis in women with clinical suspicion of DIE, using surgical data as the reference standard. Study quality was assessed using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) tool. RESULTS: Our extended search identified a total of 801 citations, among which 19 studies (n = 2639) were considered eligible and included in the meta-analysis. Overall pooled sensitivity, specificity, positive likelihood ratio (LR+) and negative likelihood ratio (LR-) of TVS for detecting DIE in the rectosigmoid were 91% (95%CI, 85-94%), 97% (95%CI, 95-98%), 33.0 (95%CI, 18.6-58.6) and 0.10 (95%CI, 0.06-0.16), respectively. Significant heterogeneity was found for sensitivity (I(2) , 90.8%; Cochran Q, 195.2; P < 0.001) and specificity (I(2) , 76.8%; Cochran Q, 77.7; P < 0.001). We did not find statistical differences between non-enhanced TVS and E-TVS (P = 0.304). CONCLUSION: Overall diagnostic performance of TVS for DIE of the rectosigmoid is good. However, further studies with improved quality in design are needed. Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.
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