Malignancy Risk Estimation System for Thyroid Nodule


US Findings

Diameter cm
Internal Content
solid
predominantly solid
predominantly cystic
cystic
 Spongiform appearance
yes
Shape
ovoid/round
irregular
taller than wide
Margin
smooth
ill-defined
spiculated
Echogenicity
marked hypoechogenicity
hypoechogenicity
isoechogenicity
hyperechogenicity
 Calcification
microcalcification
rim calcification
macrocalcification
 
 Sonoelastography
stiff
non-stiff

Note: In the small subgroups (score of 1 and 12), malignancy risk was based on extrapolation from other data, because of small number. Some US findings (spongiform and micro-calcifications; cystic and micro-calcifications) cannot be simultaneously submitted because these findings did not coexist in our dataset.
essential data for all cases (the range of diameter is 0.5 - 10 cm).
essential data set except for the cases with US findings of cystic, spongiform, or macrocalcifiation.



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