Sonographic demonstration of a pharyngoesophageal diverticulum

We report a case of pharyngoesophageal (Zenker's) diverticulum in a gl-year -old woman. Sonography of the thyroid gland showed diffuse enlargement of t he gland and a well-defined, heterogeneous hyperechoic mass that appeared t o be in the posterior left lobe. The mass had a smooth hypoechoic wall with a layered appearance anteriorly. Real-time sonography performed during the patient's ingestion of water showed transient changes in the size, margins , and echogenicity of the lesion, which subsequently reverted to its origin al appearance. (C) 2000 John Wiley & Sons, Inc.