Surgical dissection of the ethmoid labyrinth dates back to before 300 BC when Hippocrates removed polyps and parts of ethmoid cells with a sponge attached to strings.
Computed tomography (CT) of the sinuses revealed left frontoethmoid sinusitis and marked aeration of the left ethmoid labyrinth with extension of ethmoid cells inferior and medial to the ethmoid infundibulum (figure, B).