The usefulness of the ultrasound diagnosis of suspicious ovarian masses based on the O-RADS classification system

Abstract

Objectives: Ovarian malignancy represent the leading cause of mortality from gynecologic cancers and its diagnosis is a special challenge. Ultrasonography is the primary imaging modality and the Ovarian-Adnexal Reporting and Data System (O-RADS) US was made to provide consistent interpretations that can help in management recommendation. The present study aimed to evaluate the usefulness of using the O-RADS classification system US in the diagnosis of suspicious ovarian masse lesions. Methods: Fifty patients " 15 pre and 35 post-menopausal" with suspicious adnexal mass lesions, their ages ranged from 19-67 years (M=41.8±3.64 years). Trans-abdominal & trans-vaginal US with Color/Power Doppler examination was done to all patients. The US O-RADS classification system was used for evaluation of the all studied adnexal mass lesions. Results: Lesion morphology including size, consistency and vascularity were analyzed and scored using the US O-RADS system with selected proper line of management revealed, 13 lesions as O-RADS3 (likely benign) while 18 lesions scored as O-RADS4 &19 lesions scored as O-RADS5 (likely malignant). The O-RADS scoring system showed a high sensitivity 94.12%, specificity 68.75%, and accuracy 86% with 86.49% PPV & 84.62 NPV. Conclusions: The U/S O-RADS classification system was found to be a valuable non-invasive diagnostic tool of suspicious ovarian masses with high sensitivity in differentiation between benign and malignant neoplastic lesions.