 There is an elongated non-enhancing T2 hyperintense lesion that measures up to 14 mm in length and 5 mm in width within the anterolateral left larynx, centered in the region of the laryngeal vestibule. There is associated surrounding mild edema and enhancement with mild narrowing of the airway. Otherwise, there is no evidence of soft tissue mass or significant cervical lymphadenopathy in the neck. There is nonspecific fluid in the bilateral mastoid air cells. The osseous structures are otherwise unremarkable. The airways are patent. There is mil d prominence of the subarachnoid spaces anterior to the bilateral temporal lobes. The orbits are unremarkable.
A cystic lesion in the left anterolateral larynx measures up to 14 mm and is associated with mild airway narrowing. The imaging characteristics are nonspecific and the evaluation is somewhat limited without an available preoperative comparison study. Nevertheless, differential considerations include residual congenital saccular laryngeal cyst and perhaps less likely a branchial apparatus anomaly or lymphatic malformation. Apparent mild surrounding inflammatory changes may be reactive or postoperative in nature, although superimposed infection cannot entirely excluded.