IOTA phase 3: Compare the performance of IOTA diagnostic strategies and RMI on prospectively collected data from a large number of patients and centres

This is the phase 3 of the IOTA study. This dataset contains the data of 2403 prospectively collected patients presenting with at least one adnexal mass collected in 18 centers from six countries between 2009 and 2012, who underwent transvaginal ultrasound and surgery within 120 days of the ultrasound.