Comparison of value on gynecologic imaging reporting and data system and risk of malignancy index 4 in differentiating benign and malignant ovarian neoplasms / 中国医学影像技术

ABSTRACT

Objective To compare the value of gynecologic imaging reporting and data system (GI-RADS) and risk of malignancy index 4 (RMI 4) in differential diagnosis of benign and malignant ovarian neoplasms. Methods Data of 342 patients with ovarian neoplasms confirmed by pathology were analyzed retrospectively. Taking pathological results as gold standards, GI-RADS 1-4a as benign tumor, GI-RADS 4b-5 as malignant tumor, RMI 4=450 as critical points of benign and malignant ones, the diagnostic performance of GI-RADS and RMI 4 were calculated and compared. Results The sensitivity, specificity, positive predictive value, accuracy, AUC of GI-RADS and RMI 4 for differentiating benign and malignant ovarian neoplasms were 70.71% (70/99)and 53.54% (53/99), 98.77% (240/243) and 95.47% (232/243), 95.89% (70/73) and 82.81% (53/64), 90.64% (310/342) and 83.33% (285/342), 0.91 and 0.81, respectively (all P<0.05). Conclusion GI-RADS classification is better than RMI 4 in differentiating benign and malignant ovarian neoplasms.