Thyroglossal duct cyst


Thyroglossal duct cyst is the most common congenital neck anomaly. It is an anterior midline cystic swelling along the course of thyroglossal duct, more common to be infrahyoid (as in this case) and can be a little off midline. It usually presents as painless neck swelling unless infected.

As we see the upper part of the cystic lesion in the sagittal image curves backwards and superiorly to reach behind the hyoid bone as this corresponds to the course of thyroglossal duct.