A. Ultrasound image of euthyroid Hashimoto thyroiditis. A representative ultrasound is shown of an asymptomatic, euthyroid patient's thyroid nodule cytologically diagnosed Hashimoto thyroiditis. Note the minimal color flow Doppler identified within the nodule. B. Cytopathology. Cytological characteristics of a thyroid nodule with typical diagnostic features of Hashimoto's thyroiditis (i.e. lymphocytic infiltrate, Hurthle cells, lymphoglandular bodies and crushed lymphocytes).