PMC7471785_01
Ultrasound image before presentation showing the right mid to lower pole mixed cystic-solid thyroid nodule measuring 4.66 x 3.05 x 1.66 cm, with a well-defined margin and comet-tail artefact (consistent with the colloid nodule).
CRIE2020-7104806.001.jpg
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fig1
US thyroid performed in November 2017 showed a 4.7  cm x 3.1  cm x 1.7 cm mixed solid-cystic thyroid nodule in the right mid to lower pole, with comet-tail artefact and peripheral vascularity (Figure 1).
Ultrasound image at the time of presentation with neck pain and fever, showing the same thyroid nodule with increase in size measuring 4.95 x 4.13 x 3.04 cm and with interval development of isoechoic debris in the cystic fluid.
CRIE2020-7104806.002.jpg
PMC7471785_01_CRIE2020-7104806.002.jpg
fig2
Repeat US thyroid revealed interval enlargement of the thyroid nodule which measured 5.0  cm x 4.1  cm x 3.0 cm with interval development of isoechoic debris in the cystic fluid (Figure 2).