A Case of Zenker’s Diverticulum Mimicking a Thyroid Nodule

The Zenker’s diverticulum is the most common diverticulum of the esophagus. It commonly occurs at the pharyngoesophageal junction that can appear in proximity to the thyroid gland. The food remnants or gas bubbles present in the diverticulum may mimic microcalcifications presented in papillary thyroid carcinoma on ultrasonography. Therefore, it is important to be able to differentiate between Zenker’s diverticulum and malignant thyroid nodule. The author reported a case of Zenker’s diverticulum mimicking a thyroid nodule in thyroid ultrasonography.