Rohana Gillies1, Linda Ashley1, Colleen Bergin2. 1. Radiology Department Auckland City Hospital 2 Park Rd Grafton Auckland 1023 New Zealand. 2. Faculty of Medicine and Health Sciences University of Auckland 85 Park Rd Grafton Auckland 1142 New Zealand.
Abstract
PURPOSE: To evaluate the accuracy of the sonographic subserosal hypoechoic rim sign and endomyometrial junctional indistinctness in identifying patients with acute endometritis during the puerperal period. METHODS: Radiologic coding identified the ultrasound scans of all patients presenting to Auckland City Hospital between January 2014 and February 2016 who were diagnosed clinically as having acute endometritis during the post-partum or post-abortion period. After exclusion criteria were applied, the ultrasound scans of 31 patients with acute endometritis and 32 healthy controls were randomised and anonymised. Images were reviewed retrospectively by two independent reviewers to identify the presence of these signs. RESULTS: The average sensitivity and specificity for readers identifying the subserosal hypoechoic rim sign in patients with acute endometritis were 71% and 92%, respectively. Interobserver reliability was good with an average kappa score of 0.63. Average sensitivity and specificity for endomyometrial junctional indistinctness were 79% and 72%, respectively, with good interobserver correlation (average kappa score 0.65). When both signs were either present or absent together, average sensitivity improved to 80.5% and average specificity was 91.7%. CONCLUSION: We describe two new sonographic signs for puerperal endomyometritis that could improve the utility of ultrasound in the accurate and timely diagnosis of this condition.
PURPOSE: To evaluate the accuracy of the sonographic subserosal hypoechoic rim sign and endomyometrial junctional indistinctness in identifying patients with acute endometritis during the puerperal period. METHODS: Radiologic coding identified the ultrasound scans of all patients presenting to Auckland City Hospital between January 2014 and February 2016 who were diagnosed clinically as having acute endometritis during the post-partum or post-abortion period. After exclusion criteria were applied, the ultrasound scans of 31 patients with acute endometritis and 32 healthy controls were randomised and anonymised. Images were reviewed retrospectively by two independent reviewers to identify the presence of these signs. RESULTS: The average sensitivity and specificity for readers identifying the subserosal hypoechoic rim sign in patients with acute endometritis were 71% and 92%, respectively. Interobserver reliability was good with an average kappa score of 0.63. Average sensitivity and specificity for endomyometrial junctional indistinctness were 79% and 72%, respectively, with good interobserver correlation (average kappa score 0.65). When both signs were either present or absent together, average sensitivity improved to 80.5% and average specificity was 91.7%. CONCLUSION: We describe two new sonographic signs for puerperal endomyometritis that could improve the utility of ultrasound in the accurate and timely diagnosis of this condition.
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