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Incidental thyroid nodule

ACR 2015CTMRIPET
Flowchart · click to enlarge
Incidental thyroid nodule on CT/MRI

Three-tiered approach for nodules found incidentally on CT, MRI or PET/CT. Size is measured in the longest axial dimension.

  • Abnormal lymph nodes on CT/MRI: calcification, cystic change, or increased enhancement.
Not for nodules in patients with known high risk (e.g. prior neck irradiation, MEN2, familial thyroid cancer) where clinical evaluation directs workup.

Sources

  1. Hoang JK, Langer JE, Middleton WD, et al. Managing incidental thyroid nodules detected on imaging: white paper of the ACR Incidental Thyroid Findings Committee. J Am Coll Radiol. 2015;12:143–150.PubMed ↗
NextFleischner 2017 pulmonary nodules

Radessential summarizes published classification systems for practicing radiologists. Summaries are condensed; confirm details against the cited source before relying on them for patient care.