# EU-TIRADS (European thyroid nodule ultrasound system)

Source: https://onco.cc/terms/eu-tirads/  
OnCo record `eu-tirads` (Term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

EU-TIRADS is the European Thyroid Association's version of a thyroid nodule ultrasound score, sorting nodules into benign, low, intermediate and high risk to decide which need a needle biopsy.

## Summary

The European Thyroid Association's 2017 guideline (Russ and colleagues, European Thyroid Journal) built EU-TIRADS from the literature and the American (AACE and ATA) and Korean guidelines. It has an ultrasound lexicon, a standard report, definitions of benign, low-, intermediate- and high-risk nodules with the estimated risk of cancer in each, and indications for fine-needle aspiration. Its stated aims are reproducible descriptions between readers and simpler communication of results.

## Fields

- Kind: Term
- Last checked: 2026-11-04
- Also known as: EU-TIRADS; European Thyroid Imaging and Reporting Data System

## Sources

- Russ et al., European Thyroid Association guidelines for ultrasound malignancy risk stratification of thyroid nodules in adults: the EU-TIRADS (Eur Thyroid J 2017): https://doi.org/10.1159/000478927

## Connected records

- terms: [Bethesda category (thyroid cytology)](https://onco.cc/terms/bethesda-category/), [K-TIRADS (Korean thyroid nodule ultrasound system, 2021)](https://onco.cc/terms/k-tirads/), [TI-RADS (Thyroid Imaging Reporting and Data System)](https://onco.cc/terms/ti-rads/)
- cancers: [Thyroid cancer](https://onco.cc/cancers/thyroid/)
- technologies: [Ultrasound](https://onco.cc/technologies/ultrasound/)

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JSON: https://onco.cc/api/v1/entities/eu-tirads.json