"CT (e.g. of the neck, cervical spine, or chest): 25% 7,8"
"CT, MRI, PET, and other nuclear medicine scans lack the spatial resolution to characterise suspicious features and do not perfectly agree with the size and number of nodules found on US 16. Size on CT or MRI, however, can be used to stratify the need for evaluation."
"The American Thyroid Association published its guidelines on thyroid nodule management in 2015, recommending thyroid US for all patients in whom another imaging study suggested the presence of a thyroid nodule 13. The guidelines also state separately that in general, only nodules >1 cm merit evaluation."
"The American College of Radiology Incidental Thyroid Findings Committee published a white paper in 2015 with recommendations based on the so-called 3-tiered system initially developed at Duke University 14. A nodule meeting any of the following criteria is recommended for further evaluation by thyroid US:"
"when the initial finding is an FDG-avid focus on PET, FNA is recommended regardless of the ultrasound findings"
"The list of suspicious sonographic features been updated in the ACR TI-RADS 2017 publication 15."
"The list of suspicious sonographic features been updated in the ACR TI-RADS 2017 publication 15."
"American Thyroid Association recommendations"
"American College of Radiology recommendations"
"British Thyroid Association recommendations"
"In their 2014 guidelines on management of thyroid cancer, the British Thyroid Association recommend that ultrasound assessment of incidental thyroid nodules identified on CT or MRI should only be performed when there are specific suspicious features of malignancy (extra-capsular extension, tracheal invasion, associated suspicious lymphadenopathy), or the patient belongs to a high-risk group or if there is significant clinical concern."
Expected headings
"Incidental thyroid nodules on CT/MRI/PET"
"American Thyroid Association recommendations"
"American College of Radiology recommendations"
"British Thyroid Association recommendations"
"Incidental thyroid nodules on extrathyroidal ultrasound"
"There is variable practice in radiologists' reporting of incidental thyroid nodules 8,10. Professional organisations have developed recommendations to aid radiologists and other clinicians in their management."
"focal thyroid uptake on FDG-PET or other nuclear medicine scans (e.g. octreotide, sestamibi)"