ULTRASOUND OF THYROID NODULES
“ US • Features of malignancy: frank invasion, solid hypoechoic mass, ill-defined margin, micro-lobulated margin, microcalcifications, taller than wide.• In benign nodules, look for a complete hypoechoic halo (incomplete halo could be malignant), peripheral vascularity.• Cystic nodules are usually benign (Note: 20% of papillary cancers are cystic).• Comet-tail artefact is seen in colloidal cysts (benign).” …