Classic Case

Laryngocele is characterized by a benign dilatation of the laryngeal saccule, filling by air and/or fluid. It is a relatively uncommon condition and usually arises from the laryngeal ventricle. Anatomically, laryngoceles can be limited within the paralaryngeal space (internal) or extend out of the laryngeal box through the thyrohyoid membrane (external). In our case, the external laryngocele appears as a well-defined, thin-walled laryngeal cystic lesion (A and B, orange arrows) in the supraglottic paralaryngeal space (B, arrow) with extension through the thyrohyoid membrane (A, white arrow), which explains the lump of the neck. On ultrasound, the anterior neck shows an anechoic, well-defined lesion with back wall enhancement and sediment at the dependent position (C, arrow), typical of a cyst.