Learning objectives
Review the O-RADS (Ovarian-Adnexal Reporting and Data System) US classification with a simple guide using examples.
Provide radiologists with a general overview enabling them to understand and interpret O-RADS in different lesions.
Background
The accurate characterization of ovarian and other adnexal masses is essential for optimal patient management.
The O-RADS is based on a common lexicon to categorize malignancy risk throughout the spectrum of benign and more suspicious lesions with consistent interpretations to provide guidelines for management and stratification of adnexal masses.
Recommendation per the O-RADS schema includes those that carry some risk of malignancy whether discovered incidentally or during the evaluation of a clinical symptom and those discovered on other imaging modalities for which ultrasound is requested...
Findings and procedure details
Ovarian cancer is low in prevalence but potentially fatal.
O-RADS provides a classification system previously unavailable using ultrasound, based on a common lexicon, which allows categorizing the risk of malignancy through guidelines.
GENERAL INFORMATION
Based on retrospective analysis of IOTA phase 1-3 data (the largest multicenter prospective study);
US features of adnexal lesions placed in prespecified risk categories based on IOTA data;
Clinical management scheme based on expert opinion of gynecologysts, gynecologic oncologists, and radiologists;
Based on average risk, asymptomatic patient, without increased risk factors...
Conclusion
The ultimate goal is to optimize ovarian cancer outcomes while minimizing unnecessary surgical procedures in patients at low risk of malignancy and to provide a management recommendation for each risk category. Then, this classification can standardize lesions and decrease ambiguity reporting to enhance communication among the multidisciplinary team.
Personal information and conflict of interest
V. A. A. Pires:
Nothing to disclose
M. G. Castro:
Nothing to disclose
M. Sucena:
Nothing to disclose
C. Antunes:
Nothing to disclose
S. Basso:
Nothing to disclose
P. Donato:
Nothing to disclose
References
Andreotti, R. F., Timmerman, D., Strachowski, L. M., et al. (2020). O-RADS US risk stratification and management system: A consensus guideline from the ACR ovarian-Adnexal Reporting and Data System committee. Radiology, 294(1), 168–185.
Timmerman, D., Valentin, L., Bourne, T. H., Collins, W. P., Verrelst, H., & Vergote, I. (2000). Terms, definitions and measurements to describe the sonographic features of adnexal tumors: A consensus opinion from the International Ovarian Tumor Analysis (IOTA) group. Ultrasound in Obstetrics and Gynecology, 16(5), 500–505.