Clinical review: Thyroid cancer mimics on surveillance neck sonography.

Sonography of the neck is a critical tool in monitoring patients after near-total thyroidectomy for differentiated thyroid cancer. Sonography has proven to be among the most sensitive imaging techniques for the detection of recurrent or residual cancer in the thyroidectomy bed and metastatic cervical lymph nodes. It is important for the sonologist to be familiar with normal postsurgical findings and other disease processes that may imitate malignant lesions. We describe the typical sonographic appearance of benign lesions that can resemble recurrent thyroid cancer.