Guideline Current ACR 2019
O-RADS Ultrasound
Ovarian-Adnexal Reporting and Data System for ultrasound. Risk categories 0 (incomplete) through 5 (high risk of malignancy) with corresponding management.
Updated Jul 5, 2026
Applies to
- Adnexal lesions on pelvic ultrasound
Classification
- O-RADS US 0
- O-RADS US 1
- O-RADS US 2
- O-RADS US 3
- O-RADS US 4
- O-RADS US 5
Exclusions
None listed
Interactive
Decision tree
Enter a finding to compute a recommendation without leaving the page.
Recommendation builder
Select the O-RADS US risk category.
Evidence
References
FAQ
Frequently asked
Does this guideline apply to oncology patients?
No — patients with known malignancy fall outside the scope unless the guideline states otherwise. Follow oncologic surveillance protocols instead.