endocrinology general-medicine

ACR TI-RADS — Thyroid Imaging Reporting & Data System

American College of Radiology TI-RADS (2017) for risk-stratifying thyroid nodules on ultrasound. Sum 5 features → TR1–TR5 with FNA size thresholds.

Score interpretation

TR1 — Benign 0–1

→ No FNA. No follow-up beyond standard care.

TR2 — Not suspicious 2

→ No FNA. No follow-up.

TR3 — Mildly suspicious 3

→ FNA if ≥2.5 cm. Follow with US if ≥1.5 cm at 1, 3, 5 years.

TR4 — Moderately suspicious 4–6

→ FNA if ≥1.5 cm. Follow with US if ≥1 cm at 1, 2, 3, 5 years.

TR5 — Highly suspicious 7–30

→ FNA if ≥1 cm. Follow with US if ≥0.5 cm annually for 5 years. Consider thyroid MDT.

Interpretation bands for the TI-RADS. Apply clinical judgement and local guidance.

Curated clinical cross-links plus same-class fallbacks.

Calculators

Drugs

Pathways

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.