Thyroid : official journal of the American Thyroid Association
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A "taller-than-wide" shape is associated with thyroid malignancy, but taller-than-wide in which plane is most accurate is unclear. We determined in which ultrasonography (US) plane a taller-than-wide shape is most predictive of malignancy. ⋯ A taller-than-wide shape was a useful US feature for predicting thyroid malignancy. Criterion 1, a taller-than-wide shape in either transverse or longitudinal plane, was most accurate and sensitive for predicting thyroid malignancy among the three criteria.