Objective: To analyse retrospectively the score of the risk of malignancy index (RMI) in determining malignancy in the patients with ovarian mass in Dr. Sardjito Hospital Yogyakarta. Method: Retrospective analysis. Results: Ninety patients with complete medical record and adnexal mass were enrolled in the study from January 2007 to March 2009. Sl1t)jects consisted of 70 patients (77.78%) diag…