A 4-year-old girl presented with an asymptomatic midline neck mass of several weeks' duration. She had been in recent good health, with no inflammatory or worrisome constitutional symptoms. She had no respiratory distress, dysphagia, odynophagia, or dysphonia. There had been no precedent neck trauma. Her medical history was noncontributory. Physical examination revealed a nontender midline anterior neck mass, measuring approximately 2 cm in diameter, overlying the thyroid cartilage. The mass appeared fixed deeply but not to the skin. There was no induration. No additional cervical masses or lymphadenopathy was palpable. The mass did not clearly move with tongue protrusion. The thyroid gland was not palpable.
Tang MH, Caruso PA, Cunningham MJ. Radiology Quiz Case 2. Arch Otolaryngol Head Neck Surg. 2007;133(9):941-942. doi:10.1001/archotol.133.9.941