Risk of Malignancy Index 4 (RMI4) and Risk of Malignancy Index 3 (RMI3) as Diagnostic Tests for Adnexal Tumor

Objective: Comparing scoring with RMI3 and RMI4 in establishing the diagnosis of adnexal tumour in RSUD Dr. Saiful Anwar Malang. Methods: Prospective cohort study with samples of all patients suspected of having an adnexal tumour diagnosed in gynecology policlinic using gynecological oncology policlinic medical records at RSUD Dr. Saiful Anwar in the form of age, demographics, menopause status, Ca125, ultrasound results. Results: Between the RMI3 results and the results of histopathology, a contingency coefficient of 0.596 was obtained with a p-value of 0.000015 (p <0.05), with a PPV of 83%, an NPV of 91%. Between the RMI4 results and the histopathology results, a contingency coefficient of 0.657 with a p-value of 0.0000004 (p <0.05) was obtained, with a PPV of 92%, NPV of 95%. On the ROC curve, the area of the predicted results using the RMI4 score is higher than the RMI3 score. Conclusions: Using the RMI4 score results in more accurate predictions than the RMI3 score in detecting adnexal tumour malignancies.