The diagnostic performance of ultrasound for acute appendicitis in pregnant and young nonpregnant women: A case-control study  Lior Segev, Yakir Segev, Shlomi Rayman, Aviram Nissan, Eran Sadot  International Journal of Surgery  Volume 34, Pages 81-85 (October 2016) DOI: 10.1016/j.ijsu.2016.08.021 Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

Fig. 1 ROC curves: Predictive performance of ultrasound for the pathologic diagnosis of appendicitis stratified by pregnancy status. Pregnant group: AUC = 0.76 (95%CI 0.64–0.87); Nonpregnant group: AUC = 0.73 (95%CI: 0.63–0.83) p = 0.78. International Journal of Surgery 2016 34, 81-85DOI: (10.1016/j.ijsu.2016.08.021) Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

Fig. 2 ROC curves: Predictive performance of ultrasound for the pathologic diagnosis of appendicitis in pregnant patients, stratified by trimester. Trimester 1 (n = 23): AUC = 0.73 (95%CI: 0.4–1.0); Trimester 2 (n = 32): AUC = 0.67 (95%CI: 0.49–0.87); Trimester 3 (n = 12): AUC = 0.86 (95%CI: 0.68–1.0) p = 0.4. International Journal of Surgery 2016 34, 81-85DOI: (10.1016/j.ijsu.2016.08.021) Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions

Fig. 3 Ultrasound picture of a 20 years old patient showing Acute Appendicitis: sonographic blind-ending tubular structure that demonstrates 6 mm wall thickening and edema. An echogenic focus within the appendix is consistent with appendicolith. International Journal of Surgery 2016 34, 81-85DOI: (10.1016/j.ijsu.2016.08.021) Copyright © 2016 IJS Publishing Group Ltd Terms and Conditions