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Colloid nodule : thyroid

Case contributed by: Dr Charudutt Jayant Sambhaji

From the case: Colloid nodule : thyroid

Modality: Ultrasound

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Case Discussion:

The images show a hyperplastic thyroid nodule in the left lobe with extensive liquefactive denegeneration resulting in a thick walled cystic lesion with intracystic residual tissue in the form of pheripheral solid/ cystic nodules that were avascular.

The cystic nodule shows multiple bright foci with Comet-tail artifacts likely due the presence of microcrystals a classical feature of colloid nodule.

Also, noted are left level III lymph nodes with indeterminate morphology, while doppler analysis of the same favouring benignity. Histopathology revealed reactive lymphadenopathy.

Also see Malignant Lymph node, Morphology & Doppler analysis.