Inspissated colloid in a thyroid nodule

Case contributed by Dr Matt A. Morgan


Thyroid nodule seen incidentally on chest CT.

Patient Data

Age: 50-55 years old
Gender: Female

There is a brightly echogenic focus in a round-well marginated hypoechoic nodule. The echogenic focus demonstrates comet-tail artifact / reverberation artifact.

Case Discussion

Inspissated colloid and microcalcifications in a thyroid nodule can sometimes be confused on ultrasound. Reverberation artifact ("comet-tail artifact") can be useful to help make the diagnosis of inspissated colloid. Unlike microcalcifications, inspissated colloid does not confer increased malignancy risk to a thyroid nodule.

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Case information

rID: 52418
Published: 6th Apr 2017
Last edited: 14th Aug 2019
System: Head & Neck
Inclusion in quiz mode: Excluded

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