ABSTRACTOBJECTIVE: Evaluate the vascularization classification of thyroid nodules with color Doppler ultrasonography described by Lagalla and cols. and Chammas and cols. METHODS: A total of 265 thyroid nodules were studied with color Doppler and citopathology. RESULTS: In the diagnosis of nodules with malignant citopathology, Chammas’s IV and V patterns showed sensibility of 16.7%, specificity of 97.6%, positive predictive value of 33.3%, negative predictive value of 94.1% and accuracy of 92.1%; Lagalla’s III pattern showed sensibility of 44.4%, specificity of 19.4%, […]