Papillary thyroid carcinoma on sonography.

Objective: The purpose of this study is to investigate the characteristics of papillary thyroid carcinomas (PTCs) on color duplex sonography (CDUS).

Methods: We retrospectively reviewed 115 nodules (104 patients) with PTC confirmed by pathology from February 1, 2005, to August 31, 2008. The size, border, calcification, echotexture, hemodynamics (peak systolic velocity and resistance index) of the thyroid nodules and cervical lymph nodes on CDUS were analyzed.