🩻 Ovarian-Adnexal O-RADS (US) Risk Stratification
UseTranslate an O-RADS US category into a follow-up, MRI or gyn-oncology pathway.
SourceAndreotti RF, et al. O-RADS US Risk Stratification and Management System. Radiology 2020
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
O-RADS 3 with a solid lesion still warrants MRI characterisation.
When to use
Translate an O-RADS US category into a follow-up, MRI or gyn-oncology pathway.
How it works
1 normal (0%), 2 almost certainly benign (< 1%), 3 low (1–< 10%), 4 intermediate (10–< 50%), 5 high (≥ 50%) risk of malignancy.
Key points
- O-RADS 3 with a solid lesion still warrants MRI characterisation.
- O-RADS 4 → MRI or gynaecology evaluation; consider CA-125.
- O-RADS 5 (irregular solid, high colour score, ascites/peritoneal nodules) → gyn-oncology referral.
- Categories follow the US lexicon (lesion type, solid component, colour score).
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| O-RADS US category | 2 — Almost certainly benign |
|---|
→ManagementMostly none / conservative follow-up
- Category：O-RADS 2: Almost certainly benign (< 1%)
- Management：Classic benign (simple cyst, typical haemorrhagic cyst, typical endometrioma, typical dermoid/mature cystic teratoma, dilated tube): mostly no action, some conservatively followed by size/type
- Note：O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon
| O-RADS US category | 0 — Incomplete evaluation |
|---|
→ManagementFurther evaluation
- Category：O-RADS 0: Incomplete evaluation
- Management：Inadequate assessment due to technical/patient factors: repeat or use transvaginal ultrasound / MRI for further evaluation
- Note：O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Ovarian-Adnexal O-RADS (US) Risk Stratification?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Ovarian-Adnexal O-RADS (US) Risk Stratification upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Ovarian-Adnexal O-RADS (US) Risk Stratification calculated in practice? Can you show a worked example?
- Inputs: O-RADS US category 2 — Almost certainly benign → Result: Management Mostly none / conservative follow-up（Category: O-RADS 2: Almost certainly benign (< 1%), Management: Classic benign (simple cyst, typical haemorrhagic cyst, typical endometrioma, typical dermoid/mature cystic teratoma, dilated tube): mostly no action, some conservatively followed by size/type, Note: O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon） Inputs: O-RADS US category 0 — Incomplete evaluation → Result: Management Further evaluation（Category: O-RADS 0: Incomplete evaluation, Management: Inadequate assessment due to technical/patient factors: repeat or use transvaginal ultrasound / MRI for further evaluation, Note: O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon）