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Interobserver agreement on standardized ultrasound and histopathologic signs for the prenatal diagnosis of placenta accreta spectrum disorders

Zosmer, N; Jauniaux, E; Bunce, C; Panaiotova, J; Shaikh, H; Nicholaides, KH; (2017) Interobserver agreement on standardized ultrasound and histopathologic signs for the prenatal diagnosis of placenta accreta spectrum disorders. International Journal of Gynecology & Obstetrics , 140 (3) pp. 326-331. 10.1002/ijgo.12389. Green open access

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Abstract

Objective To evaluate interobserver agreement in assessment of ultrasound signs and histopathologic findings associated with placenta accreta spectrum (PAS) disorders. Methods A retrospective study was conducted using data for patients prenatally diagnosed with PAS disorders at a UK hospital between January 31, 2012, and March 30, 2017. Ultrasound images (including gray‐scale and color Doppler imaging [CDI] parameters) and histopathologic slides were reviewed by two observers; the level of agreement was calculated. Results Among 25 patients, 11 had placenta creta, 10 had placenta increta, and four had placenta percreta. Interobserver agreement for ultrasound imaging in the second and third trimesters and histopathologic diagnosis of PAS was rated as good‐to‐excellent. The highest level of interobserver agreement for ultrasound signs was found for loss of clear zone (100%) and substantial myometrial thinning (96%–100%) on gray‐scale imaging, the presence of lacunar feeder vessels (100%) on two‐dimensional CDI, and crossing vessels and lacunae (92%–95%) on three‐dimensional CDI. Conclusion Standardized ultrasound signs might prove useful for prenatal screening of women at risk of PAS disorders and should enable remote evaluation of images when PAS is suspected.

Type: Article
Title: Interobserver agreement on standardized ultrasound and histopathologic signs for the prenatal diagnosis of placenta accreta spectrum disorders
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/ijgo.12389
Publisher version: https://doi.org/10.1002/ijgo.12389
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Life Sciences & Biomedicine, Obstetrics & Gynecology, Histopathology, Interobserver agreement, Placenta accreta spectrum disorders, Placenta creta, Placenta increta, Placenta percreta, Prenatal diagnosis, Ultrasound, ABNORMALLY INVASIVE PLACENTA, PREGNANCY, PERCRETA, ADHERENT, PREVIA, RISK, AIP
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL EGA Institute for Womens Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL EGA Institute for Womens Health > Reproductive Health
URI: https://discovery.ucl.ac.uk/id/eprint/10049177
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