5Juan Rosai. Rosai and Ackerman's Surgical Pathology. 9th. Mosby,2004:515-541.
6Rago T,Vitti P,Chovato L,et al. Role of conventional ultrasonography and color flow Doppler sonography in predicting malignancy in " cold " thyroid nodules. European Journal of Endocrinology, 1998,138 (1):41-46.
7Senchenkov A,Staren ED. Ultrasound in head and neck surgery: thyroid,parathyroid,and cervical lymph nodes. Surg Clin N Am, 2004,84: 973-1000.
8Chan BK, Desser TS, McDougall IR,et al. Common and uncommon sonographic features of papillary thyroid carcinoma. J Ultrasound Med,2003,22(10) : 1083-1090.
9Chammas MC,Gerhard R,de Oliveira IR,et al. Thyroid nodules: evaluation with power Doppler and duplex Doppler ultrasound. Otolaryngol Head Neck Surg, 2005,132 (6) : 874-882.