Imaging Evaluation of Thyroid Nodules

Posted by e-Medical PPT
Malignant Thyroid Nodules
No clear evidence that treatment of thyroid cancers of < 1 cm alters life expectancy
Most thyroid cancers: papillary or follicular histology with excellent prognosis
Risk of malignancy greater for patients < 20 years and > 60 years of age
Higher risk with previous radiation exposure
Cancer risk of 10 - 13%  whether thyroid contains solitary or multiple nodules

US Features of Malignant Thyroid Nodules
Microcalcifications
Taller than wide
Marked hypoechogenicity (less than adjacent strap muscles)
Coarse internal calcifications
Microlobulations
Irregular margins
Internal blood flow
Solid composition


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