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Insights into Imaging
Fig. 4 | Insights into Imaging

Fig. 4

From: Ultrasonography of thyroid nodules: a pictorial review

Fig. 4

(a) A suspicious hypo-echoic nodule with signal lower than the surrounding thyroid tissue but higher than the strap muscle above. (b) A suspicious hypo-echoic nodule with signal lower than both thyroid tissue and strap muscle. (c) A suspicious hypo-echoic nodule with interrupted eggshell calcification around the edges. (d) A suspicious hypo-echoic nodule with a lobular margin

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