spongiform thyroid nodule

Differentiation

of benign and malignant thyroid nodules based on the proportion of sponge-like areas on ultrasonography | Grading of sponge-like nodules. The grades were determined according to the proportion of areas with a sponge-like appearance within each nodule. Grade I was defined as 75%.

Ultrasonography

of thyroid nodules: a pictorial review. (a) A benign nodule. It is iso-echoic relative to the thyroid, and surrounded by a hypo-echogenic halo. (b) A benign cystic nodule with multiple colloids, which are seen as hyper-echoic spots with comet-tail. (c) A benign nodule with hypo-echoic cystic spaces resulting in a spongiform or honeycomb appearance. (d) A benign nodule with eggshell calcification. Note the acoustic shadowing produced by the calcific ring. (e) A benign nodule with eggshell calcification. (f) A benign nodule with peripheral vascularity on Doppler assessment