Thyroid Risk Calculator Thyroid Risk Calculator Composition: Cystic or completely cystic Spongiform Mixed cystic and solid Solid or almost completely solid Echogenicity: Anechoic Hyper- or isoechoic Hypoechoic Very hypoechoic Shape: Wider than tall Taller than wide Margin: Smooth Ill-defined Lobulated/irregular Extra-thyroidal extension Echogenic foci: None Large comet-tail artifact Macrocalcifications Peripheral/rim calcifications Calculate Score