CECT of the neck. CECT of the neck shows a well-defined lobulated mass with irregular margins and cystic areas measuring 3.5*3.5*5cm in the right submandibular region extending up to the midline (shown in pink arrow). Also non-visualized thyroid parenchyma suggestive of congenital hypoplastic thyroid (shown in red arrow).CECT - contrast-enhanced computed tomography