Thyroid disease

Risk Stratification of Pediatric Thyroid Nodules Using Adult Thyroid Nodule Scoring Systems:American Thyroid Association and American College of Radiology Thyroid Imaging Reporting and Data System

Endocr PractPublished Retrospective diagnostic accuracy study

Authors' conclusion

ATA and TIRADS have low sensitivity in pediatrics. Lowering the size cut-offs for FNA increases sensitivity to >90%.

Study context

Population
Patients aged ≤18 years with thyroid nodules, 2002 to 2022; median age 15 years (range 2–18 years); 71.4% women115 thyroid nodules
Participants
77 patients
Comparison
American Thyroid Association (ATA) vs ACR TIRADS risk stratification for fine needle aspiration (FNA) recommendation in pediatric thyroid nodules
Outcome
Performance of ATA and TIRADS using adult size cut-offs for FNA
Methodological detailsretrospective review, blinded independent review by 2 radiologists, arbitration by a third radiologist, Nonresected nodules considered benign if size stable and/or repeat FNA again benign
  • Retrospective review
  • Blinded independent review by 2 radiologists
  • Arbitration by a third radiologist
  • Nonresected nodules considered benign if size stable and/or repeat FNA again benign

Performance

As reported in the abstract

Performance with adult size cut-offs for FNA
Test or modelMalignant nodules not recommended for biopsySensitivitySpecificity
ATA11 of 3266%55%
TIRADS15 of 3253%87%

Malignant nodules not recommended for biopsy

ATA11 of 32
TIRADS15 of 32

Sensitivity

ATA66%
TIRADS53%

Specificity

ATA55%
TIRADS87%
Malignancy rate
27.8%

Further findings

Optimal size cut-offs for FNA (sensitivity analysis): ATA 2 cm very low, 1 cm low, 0.5 cm intermediate and high risk; TIRADS 3 cm TIRADS-2, 0.8 cm TIRADS-3 and TIRADS-4, 0.5 cm TIRADS-5

Sensitivity

Specificity

Original publication

Risk Stratification of Pediatric Thyroid Nodules Using Adult Thyroid Nodule Scoring Systems:American Thyroid Association and American College of Radiology Thyroid Imaging Reporting and Data System. Endocr Pract. Published 26 June 2026. doi:10.1016/j.eprac.2026.06.007

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