Colloid nodule (thyroid)

Case contributed by Ashesh Ishwarlal Ranchod
Diagnosis certain

Presentation

Clinically palpable right thyroid nodule. For sonographic review and work-up.

Patient Data

Age: 45 years
Gender: Male
ultrasound

An enlarged, cystic, right colloid nodule measuring 36.4 x 22.4 x 27.0 mm is identified.

There is a complex appearance suggesting a combination of necrosis, hemorrhage and calcifications.

Cine loop

ultrasound

The cine loop demonstrates the cystic colloid nodule with hemorrhage and necrosis. There are associated calcifications giving rise to the comet tail artifact.

Case Discussion

An example of the comet tail artifact, due to calcifications within a hemorrhagic, cystic, colloid nodule within the right thyroid lobe.

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